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initial import of 386bsd-0.1 sources
1993-03-21 12:45:37 +03:00
Info file uucp.info, produced by Makeinfo, -*- Text -*- from input
file uucp.texi.
This file documents Taylor UUCP, version 1.03.
Copyright (C) 1992 Free Software Foundation, Inc.
Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.
Permission is granted to copy and distribute modified versions of
this manual under the conditions for verbatim copying, provided also
that the section entitled "Copying" are included exactly as in the
original, and provided that the entire resulting derived work is
distributed under the terms of a permission notice identical to this
one.
Permission is granted to copy and distribute translations of this
manual into another language, under the above conditions for modified
versions, except that the section entitled "Copying" may be included
in a translation approved by the author instead of in the original
English.

File: uucp.info, Node: Chat Scripts, Next: config File, Prev: Time Strings, Up: Configuration Files
Chat Scripts
============
Chat scripts are used in several different places, such as dialing
out on modems or logging in to remote systems. Chat scripts are made
up of pairs of strings. The program waits until it sees the first
string, known as the "expect" string, and then sends out the second
string, the "send" string.
Each chat script is defined using a set of commands. These commands
always end in a string beginning with `chat', but may start with
different strings. For example, in the `sys' file there is one set of
commands beginning with `chat' and another set beginning with
`called-chat'. The prefixes are only used to disambiguate different
types of chat scripts, and this section ignores the prefixes when
describing the commands.
`chat STRINGS'
Specify a chat script. The arguments to the `chat' command are
pairs of strings separated by whitespace. The first string of
each pair is an expect string, the second is a send string. The
program will wait for the expect string to appear; when it does,
the program will send the send string. If the expect string does
not appear within a certain number of seconds (as set by the
`chat-timeout' command) the chat script fails and, typically, the
call is aborted. If the final expect string is seen (and the
optional final send string has been sent), the chat script is
successful.
An expect string may contain additional subsend and subexpect
strings, separated by hyphens. If the expect string is not seen,
the subsend string is sent and the chat script continues by
waiting for the subexpect string. This means that a hyphen may
not appear in an expect string; use `\055' instead.
An expect string may simply be `""', meaning to skip the expect
phase. Otherwise, the following escape characters may appear in
expect strings:
`\b'
a backspace character
`\n'
a newline or line feed character
`\N'
a null character (for BNU compatibility)
`\r'
a carriage return character
`\s'
a space character
`\t'
a tab character
`\\'
a backslash character
`\DDD'
character DDD, where DDD are up to three octal digits
`\xDDD'
character DDD, where DDD are hexadecimal digits.
As in C, there may be up to three octal digits following a
backslash, but the hexadecimal escape sequence continues as far
as possible. To follow a hexadecimal escape sequence with a hex
digit, interpose a send string of `""'.
A send string may also simply be `""' to skip the send phase.
Otherwise, all of the escape characters legal for expect strings
may be used, and the following escape characters are also
permitted:
`EOT'
send an end of transmission character (`^D')
`BREAK'
send a break character (may not work on all systems)
`\c'
suppress trailing carriage return at end of send string
`\d'
delay sending for 1 second
`\e'
disable echo checking
`\E'
enable echo checking (wait for echo before continuing)
`\K'
same as `BREAK' (for BNU compatibility)
`\p'
pause sending for a fraction of a second
Some specific types of chat scripts also define additional escape
sequences that may appear in the send string. For example, the
login chat script defines `\L' and `\P' to send the login name and
password, respectively.
A carriage return will be sent at the end of each send string,
unless the `\c' escape sequence appears in the string. Note that
some UUCP packages use `\b' for break, but here it means
backspace.
Echo checking means that after writing each character the program
will wait until the character is echoed. Echo checking must be
turned on separately for each send string for which it is
desired; it will be turned on for characters following `\E' and
turned off for characters following `\e'.
`chat-timeout NUMBER'
The number of seconds to wait for an expect string in the chat
script before timing out and sending the next subsend or failing
the chat script entirely. The default value is 10 for a login
chat or 60 for any other type of chat.
`chat-fail STRING'
If the STRING is seen at any time during a chat script, the chat
script is aborted. The string may not contain any whitespace
characters; escape sequences must be used for them. Multiple
`chat-fail' commands may appear in a single chat script. The
default is to have none.
This permits a chat script to be quickly aborted if an error
string is seen. For example, a script used to dial out on a
modem might use the command `chat-fail BUSY' to stop the chat
script immediately if the string `BUSY' was seen.
`chat-seven-bit BOOLEAN'
If the argument is true, all incoming characters are stripped to
seven bits when being compared to the expect string. Otherwise
all eight bits are used in the comparison. The default is true
because some Unix systems generate parity bits during the login
prompt which must be ignored while running a chat script. This
has no effect on any `chat-program', which must ignore parity by
itself if necessary.
`chat-program STRINGS'
Specify a program to run before executing the chat script. This
program could run its own version of a chat script, or it could
do whatever it wants. If both `chat-program' and `chat' are
specified, the program is executed first followed by the chat
script.
The first argument to the `chat-program' command is the program
name to run. The remaining arguments are passed to the program.
The following escape sequences are recognized in the arguments:
`\Y'
port device name
`\S'
port speed
`\\'
backslash
Some specific uses of `chat-program' define additional escape
sequences.
Arguments other than escape sequences are passed exactly as they
appear in the configuration file, except that sequences of
whitespace are compressed to a single space character; this
exception may be removed in the future.
If the `chat-program' command is not used, no program is run.
On Unix, the standard input and standard output of the program
will be attached to the port in use. Anything the program writes
to standard error will be written to the UUCP log file. No other
file descriptors will be open. If the program does not exit with
a status of 0, it will be assumed to have failed; this means that
the dialing programs used by some versions of BNU may not be used
directly, although of course a shell script could be used as an
interface.
The program will be run as the `uucp' user, and the environment
will be that of the process that started `uucico', so care must be
taken to maintain security.
No search path is used to find the program; a full path name must
be given. If the program is an executable shell script, it will
be passed to `/bin/sh' even on systems which are unable to
execute shell scripts. It is also easy to invoke `/bin/sh'
directly.
Here is a simple example of a chat script that might be used to
reset a Hayes compatible modem.
chat "" ATZ OK-ATZ-OK
The first expect string is `""', so it is ignored. The chat script
then sends `ATZ'. If the modem responds with `OK', the chat script
finishes. If 60 seconds (the default timeout) pass before seeing
`OK', the chat script sends another `ATZ'. If it then sees `OK', the
chat script succeeds. Otherwise, the chat script fails.
For a more complex chat script example, see *Note Logging In::.

File: uucp.info, Node: config File, Next: sys File, Prev: Chat Scripts, Up: Configuration Files
The Main Configuration File
===========================
The main configuration file is named `config'.
Since all the values that may be specified in the main configuration
file also have defaults, there need not be a main configuration file at
all.
* Menu:
* Miscellaneous (config):: Miscellaneous config file commands
* Configuration File Names:: Using different configuration files
* Log File Names:: Using different log files
* Debugging Levels:: Debugging levels

File: uucp.info, Node: Miscellaneous (config), Next: Configuration File Names, Prev: config File, Up: config File
Miscellaneous config File Commands
----------------------------------
`nodename STRING'
`hostname STRING'
`uuname STRING'
These keywords are equivalent. They specify the UUCP name of the
local host. If there is no configuration file, an appropriate
function will be used to get the host name, if possible.
`spool STRING'
Specify the spool directory. The default is from `policy.h'.
Command files, work files, temporary files, etc., are stored in
this directory and in subdirectories of it.
`pubdir STRING'
Specify the public directory. The default is from `policy.h'. On
Unix, when a file is named using a leading `~/', it is taken from
or to the public directory. Each system may use a separate public
directory by using the `pubdir' command in the system
configuration file; see *Note Miscellaneous (sys)::.
`unknown STRING ...'
The STRING and subsequent arguments are treated as though they
appeared in the system file (*note sys file::.). They are used
to apply to any unknown systems that may call in, probably to set
file transfer permissions and the like. If the `unknown' command
is not used, unknown systems are not permitted to call in.
`max-uuxqts NUMBER'
Specify the maximum number of `uuxqt' processes which may run at
the same time. Having several `uuxqt' processes running at once
can significantly slow down a system, but since `uuxqt' is
automatically started by `uucico', it can happen quite easily.
The default for `max-uuxqts' is 0, which means that there is no
limit. If BNU configuration files are being read and the code
was compiled without `HAVE_TAYLOR_CONFIG', then if the file
`Maxuuxqts' in the configuration directory contains a readable
number it will be used as the value for `max-uuxqts'.
`v2-files BOOLEAN'
If the code was compiled to be able to read V2 configuration
files, a false argument to this command will prevent them from
being read. This can be useful while testing. The default is
true.
`bnu-files BOOLEAN'
If the code was compiled to be able to read BNU configuration
files, a false argument to this command will prevent them from
being read. This can be useful while testing. The default is
true.

File: uucp.info, Node: Configuration File Names, Next: Log File Names, Prev: Miscellaneous (config), Up: config File
Configuration File Names
------------------------
`sysfile STRINGS'
Specify the system file(s). The default is the file `sys' in the
directory NEWCONFIGDIR. These files hold information about other
systems with which this system communicates; see *Note sys file::.
Multiple system files may be given on the line, and the `sysfile'
command may be repeated; each system file has its own set of
defaults.
`portfile STRINGS'
Specify the port file(s). The default is the file `port' in the
directory NEWCONFIGDIR. These files describe ports which are used
to call other systems and accept calls from other systems; see
*Note port file::. No port files need be named at all. Multiple
port files may be given on the line, and the `portfile' command
may be repeated.
`dialfile STRINGS'
Specify the dial file(s). The default is the file `dial' in the
directory NEWCONFIGDIR. These files describe dialing devices
(modems); *Note dial file::. No dial files need be named at all.
Multiple dial files may be given on the line, and the `dialfile'
command may be repeated.
`dialcodefile STRINGS'
Specify the dialcode file(s). The default is the file `dialcode'
in the directory NEWCONFIGDIR. These files specify dialcodes that
may be used when sending phone numbers to a modem. This permits
using the same set of phone numbers in different area-codes or
with different phone systems, by using dialcodes to specify the
calling sequence. When a phone number goes through dialcode
translation, the leading alphabetic characters are stripped off.
The dialcode files are read line by line, just like any other
configuration file, and when a line is found whose first word is
the same as the leading characters from the phone number, the
second word on the line (which would normally consist of numbers)
replaces the dialcode in the phone number. No dialcode file need
be used. Multiple dialcode files may be specified on the line,
and the `dialcodefile' command may be repeated; all the dialcode
files will be read in turn until a dialcode is located.
`callfile STRINGS'
Specify the call out login name and password file(s). The
default is the file `call' in the directory NEWCONFIGDIR. If the
call out login name or password for a system are given as `*'
(*note Logging In::.), these files are read to get the real login
name or password. Each line in the file(s) has three words: the
system name, the login name, and the password. This file is only
used when placing calls to remote systems; the password file
described under `passwdfile' below is used for incoming calls.
The intention of the call out file is to permit the system file
to be publically readable; the call out files must obviously be
kept secure. These files need not be used. Multiple call out
files may be specified on the line, and the `callfile' command
may be repeated; all the files will be read in turn until the
system is found.
`passwdfile STRINGS'
Specify the password file(s) to use for login names when `uucico'
is doing its own login prompting, which it does when given the
`-e', `-l' or `-w' switch. The default is the file `passwd' in
the directory NEWCONFIGDIR. Each line in the file(s) has two
words: the login name and the password (e.g. `Ufoo foopas'). The
login name is accepted before the system name is known, so these
are independent of which system is calling in; a particular login
may be required for a system by using the `called-login' command
in the system file (*note Accepting a Call::.). These password
files are optional, although one must exist if `uucico' is to
present its own login prompts. Multiple password files may be
specified on the line, and the `passwdfile' command may be
repeated; all the files will be read in turn until the login name
is found.

File: uucp.info, Node: Log File Names, Next: Debugging Levels, Prev: Configuration File Names, Up: config File
Log File Names
--------------
`logfile STRING'
Name the log file. The default is from `policy.h'. Logging
information is written to this file. If `HAVE_BNU_LOGGING' is
defined in `conf.h', then by default a separate log file is used
for each system. Using this command to name a log file will
cause all the systems to use it.
`statfile STRING'
Name the statistics file. The default is from `policy.h'.
Statistical information about file transfers is written to this
file.
`debugfile STRING'
Name the file to which debugging information is written. The
default is from `policy.h'. This command is only effective if
the code has been compiled to include debugging (this is
controlled by the `DEBUG' variable in `policy.h'). After the
first debugging message has been written, messages written to the
log file are also written to the debugging file to make it easier
to keep the order of actions straight. The debugging file is
different from the log file because information such as passwords
can appear in it, so it must be not be publically readable.

File: uucp.info, Node: Debugging Levels, Prev: Log File Names, Up: config File
Debugging Levels
----------------
`debug STRING ...'
Set the debugging level. This command is only effective if the
code has been compiled to include debugging. The default is to
have no debugging. The arguments are strings which name the
types of debugging to be turned on. The following types of
debugging are defined:
`abnormal'
Output debugging messages for abnormal situations, such as
recoverable errors.
`chat'
Output debugging messages for chat scripts.
`handshake'
Output debugging messages for the initial handshake.
`uucp-proto'
Output debugging messages for the UUCP protocol itself.
`proto'
Output debugging messages for the individual protocols.
`port'
Output debugging messages for actions on the communication
port.
`config'
Output debugging messages while reading the configuration
files.
`spooldir'
Output debugging messages for actions in the spool directory.
`execute'
Output debugging messages whenever another program is
executed.
`incoming'
List all incoming data in the debugging file.
`outgoing'
List all outgoing data in the debugging file.
`all'
All of the above.
The debugging level may also be specified as a number. A 1 will
set `chat' debugging, a 2 will set both `chat' and `handshake'
debugging, and so on down the possibilities. Currently an 11
will turn on all possible debugging, since there are 11 types of
debugging messages listed above; more debugging types may be
added in the future. The `debug' command may be used several
times in the configuration file; every debugging type named will
be turned on. When running any of the programs, the `-x' switch
(actually, for `uulog' it's the `-X' switch) may be used to turn
on debugging. The argument to the `-x' switch is one of the
strings listed above, or a number as described above, or a comma
separated list of strings (e.g. `-x chat,handshake'). The `-x'
switch may also appear several times on the command line, in
which case all named debugging types will be turned on. The `-x'
debugging is in addition to any debugging specified by the
`debug' command; there is no way to cancel debugging information.
The debugging level may also be set specifically for calls to or
from a specific system with the `debug' command in the system
file (*note Miscellaneous (sys)::.).
The debugging messages are somewhat idiosyncratic; it may be
necessary to refer to the source code for additional information
in some cases.

File: uucp.info, Node: sys File, Next: port File, Prev: config File, Up: Configuration Files
The System Configuration File
=============================
By default there is a single system configuration, named `sys' in
the directory NEWCONFIGDIR. This may be overridden by the `sysfile'
command in the main configuration file; see *Note Configuration File
Names::.
These files describe all remote systems known to the UUCP package.
* Menu:
* Defaults and Alternates:: Using defaults and alternates
* Naming the System:: Naming the system
* Calling Out:: Calling out
* Accepting a Call:: Accepting a call
* Protocol Selection:: Protocol selection
* File Transfer Control:: File transfer control
* Miscellaneous (sys):: Miscellaneous sys file commands
* Default sys File Values:: Default values

File: uucp.info, Node: Defaults and Alternates, Next: Naming the System, Prev: sys File, Up: sys File
Defaults and Alternates
-----------------------
The first set of commands in the file, up to the first `system'
command, specify defaults to be used for all systems in that file.
Each system file uses a different set of defaults.
Subsequently, each set of commands from `system' up to the next
`system' command describe a particular system. Default values may be
overridden for specific systems.
Each system may then have a series of alternate choices to use when
calling out or calling in. The first set of commands for a particular
system, up to the first `alternate' command, provide the first choice.
Subsequently, each set of commands from `alternate' up to the next
`alternate' command describe an alternate choice for calling out or
calling in.
When a system is called, the commands before the first `alternate'
are used to select a phone number, port, and so forth; if the call
fails for some reason, the commands between the first `alternate' and
the second are used, and so forth. Well, not quite. Actually, each
succeeding alternate will only be used if it is different in some
relevant way (different phone number, different chat script, etc.). If
you want to force the same alternate to be used again (to retry a phone
call more than once, for example), enter the phone number (or any other
relevant field) again to make it appear different.
The alternates can also be used to give different permissions to an
incoming call based on the login name. This will only be done if the
first set of commands, before the first `alternate' command, uses the
`called-login' command. The list of alternates will be searched, and
the first alternate with a matching `called-login' command will be
used. If no alternates match, the call will be rejected.
The `alternate' command may also be used in the file-wide defaults
(the set of commands before the first `system' command). This might
be used to specify a list of ports which are available for all systems
(for an example of this, see *Note Gateway Example::) or to specify
permissions based on the login name used by the remote system when it
calls in. The first alternate for each system will default to the
first alternate for the file-wide defaults (as modified by the
commands used before the first `alternate' command for this system),
the second alternate for each system to the second alternate for the
file-wide defaults (as modified the same way), and so forth. If a
system specifies more alternates than the file-wide defaults, the
trailing ones will default to the last file-wide default alternate. If
a system specifies fewer alternates than the file-wide defaults, the
trailing file-wide default alternates will be used unmodified. The
`default-alternates' command may be used to modify this behaviour.
This can all get rather confusing, although it's easier to use than
to describe concisely; the `uuchk' program may be used to ensure that
you are getting what you want.

File: uucp.info, Node: Naming the System, Next: Calling Out, Prev: Defaults and Alternates, Up: sys File
Naming the System
-----------------
`system STRING'
Specify the remote system name. Subsequent commands up to the
next `system' command refer to this system.
`alternate [STRING]'
Start an alternate set of commands (*note Defaults and
Alternates::.). An optional argument may be used to name the
alternate. This name will be put in the log file if the
alternate is used to call the system. There is no way to name
the first alternate (the commands before the first `alternate'
command).
`default-alternates BOOLEAN'
If the argument is false, any remaining default alternates (from
the defaults specified at the top of the current system file)
will not be used. The default is true.
`alias STRING'
Specify an alias for the current system. The alias may be used
by local `uucp' and `uux' commands. The default is to have no
aliases.
`myname STRING'
Specifies a different system name to use when calling the remote
system. Also, if `called-login' is used and is not `ANY', then,
when a system logs in with that login name, STRING is used as the
system name. Because the local system name must be determined
before the remote system has identified itself, using `myname' and
`called-login' together for any system will set the local name for
that login; this means that each locally used system name must
have a unique login name associated with it. This allows a
system to have different names for an external and an internal
network. The default is to not use a special local name.

File: uucp.info, Node: Calling Out, Next: Accepting a Call, Prev: Naming the System, Up: sys File
Calling Out
-----------
This section describes commands used when placing a call to another
system.
* Menu:
* When to Call:: When to call
* Placing the Call:: Placing the call
* Logging In:: Logging in

File: uucp.info, Node: When to Call, Next: Placing the Call, Prev: Calling Out, Up: Calling Out
When to Call
............
`time STRING [NUMBER]'
Specify when the system may be called. The first argument is a
time string; see *Note Time Strings::. The optional second
argument specifies a retry time in minutes. If a call made
during a time that matches the time string fails, no more calls
are permitted until the retry time has passed. By default an
exponentially increasing retry time is used: after each failure
the next retry period is longer. A retry time specified in the
`time' command is always a fixed amount of time.
The `time' command may appear multiple times in a single
alternate, in which case if any time string matches the system
may be called. The default time string is `Never'.
`timegrade CHARACTER STRING [NUMBER]'
The CHARACTER specifies a grade. It must be a single letter or
digit. The STRING is a time string (*note Time Strings::.). All
jobs of grade CHARACTER or higher (where `0' > `9' > `A' > `Z' >
`a' > `z') may be run at the specified time. An ordinary `time'
command is equivalent to using `timegrade' with a grade of `z',
permitting all jobs. If there are no jobs of a sufficiently high
grade according to the time string, the system will not be
called. Giving the `-s' switch to `uucico' to force it to call a
system causes it to assume there is a job of grade `0' waiting to
be run.
The optional third argument specifies a retry time in minutes.
See the `time' command, above, for more details.
Note that the `timegrade' command serves two purposes: 1) if there
is no job of sufficiently high grade the system will not be
called, and 2) if the system is called anyway (because the `-s'
switch was given to `uucico') only jobs of sufficiently high
grade will be transferred. However, if the other system calls
in, the `timegrade' commands are ignored, and jobs of any grade
may be transferred (but see `call-timegrade' below). Also, the
`timegrade' command will not prevent the other system from
transferring any job it chooses, regardless of who placed the
call.
The `timegrade' command may appear multiple times without using
`alternate'. If this command does not appear, there are no
restrictions on what grade of work may be done at what time.
`call-timegrade CHARACTER STRING'
The CHARACTER is a single character `A' to `Z', `a' to `z', or
`0' to `9' and specifies a grade. The STRING is a time string as
described under the `time' command. If a call is placed to the
other system during a time which matches the time string, the
remote system will be requested to only run jobs of grade
CHARACTER or higher. Unfortunately, there is no way to guarantee
that the other system will obey the request (this UUCP package
will, but there are others which will not); moreover job grades
are historically somewhat arbitrary, so specifying a grade will
only be meaningful if the other system cooperates in assigning
grades. This grade restriction only applies when the other
system is called, not when the other system calls in.
The `call-timegrade' command may appear multiple times without
using `alternate'. If this command does not appear, or if none of
the time strings match, the remote system will be allowed to send
whatever grades of work it chooses.

File: uucp.info, Node: Placing the Call, Next: Logging In, Prev: When to Call, Up: Calling Out
Placing the Call
................
`baud NUMBER'
`speed NUMBER'
Specify the speed (the term "baud" is technically incorrect, but
widely understood) at which to call the system. This will try all
available ports with that baud rate until an unlocked port is
found. The ports are defined in the port file. If both `baud'
and `port' commands appear, both are used when selecting a port.
To allow calls at more than one baud rate, the `alternate' command
must be used (*note Defaults and Alternates::.). If this command
does not appear, there is no default; the baud rate may be
specified in the port file, but if it is not then the natural
baud rate of the port will be used (whatever that means on the
system). Specifying an explicit baud rate of 0 will request the
natural baud rate of the port, overriding any default baud rate
from the defaults at the top of the file.
`port STRING'
Name a particular port or type of port to use when calling the
system. The information for this port is obtained from the port
file. If this command does not appear, there is no default; a
port must somehow be specified in order to call out (it may be
specified implicitly using the `baud' command or explicitly using
the next version of `port'). There may be many ports with the
same name; each will be tried in turn until an unlocked one is
found which matches the desired baud rate.
`port STRING ...'
If more than one string follows the `port' command, the subsequent
strings are treated as commands that might appear in the port file
(*note port file::.). If a port is named (by using a single
string following `port') these commands are ignored; their
purpose is to permit defining the port completely in the system
file rather than always requiring entries in two different files.
In order to call out, a port must be specified using some
version of the `port' command, or by using the `baud' command to
select ports from the port file.
`phone STRING'
`address STRING'
Give a phone number to call (when using a modem port) or a remote
host to contact (when using a TCP port). The commands `phone' and
`address' are equivalent, but are intended to be more mnemonic
depending on the type of port in use.
When used with a modem port, an `=' character in the phone number
means to wait for a secondary dial tone (although only some modems
support this); a `-' character means to pause while dialing for 1
second (again, only some modems support this). If the system has
more than one phone number, each one must appear in a different
alternate. The `phone' command must appear in order to call out
on a modem; there is no default.
When used with a TCP port, the string names the host to contact.
It may be a domain name or a numeric Internet address. If no
address is specified, the system name is used.
When used with a port that neither is a modem nor TCP, this
command is ignored.

File: uucp.info, Node: Logging In, Prev: Placing the Call, Up: Calling Out
Logging In
..........
`chat STRINGS'
`chat-timeout NUMBER'
`chat-fail STRING'
`chat-seven-bit BOOLEAN'
`chat-program STRINGS'
These commands describe a chat script to use when logging on to a
remote system. Chat scripts are explained in *Note Chat
Scripts::.
Two additional escape sequences may be used in send strings.
`\L'
Send the login name, as set by the `call-login' command.
`\P'
Send the passowrd, as set by the `call-password' command.
Three additional escape sequences may be used with the
`chat-program' command. These are `\L' and `\P', which become
the login name and password, respectively, and `\Z', which
becomes the name of the system of being called.
The default chat script is:
chat "" \r\c ogin:-BREAK-ogin:-BREAK-ogin: \L word: \P
This will send a carriage return (the `\c' suppresses the
additional trailing carriage return that would otherwise be sent)
and waits for the string `ogin:' (which would be the last part of
the `login:' prompt supplied by a Unix system). If it doesn't
see `ogin:', it sends a break and waits for `ogin:' again. If it
still doesn't see `ogin:', it sends another break and waits for
`ogin:' again. If it still doesn't see `ogin:', the chat script
aborts and hangs up the phone. If it does see `ogin:' at some
point, it sends the login name (as specified by the `call-login'
command) followed by a carriage return (since all send strings
are followed by a carriage return unless `\c' is used) and waits
for the string `word:' (which would be the last part of the
`Password:' prompt supplied by a Unix system). If it sees
`word:', it sends the password and a carriage return, completing
the chat script. The program will then enter the handshake phase
of the UUCP protocol.
This chat script will work for most systems, so you will only be
required to use the `call-login' and `call-password' commands.
In fact, in the file-wide defaults you could set defaults of
`call-login *' and `call-password *'; you would then just have to
make an entry for each system in the call-out login file.
Some systems seem to flush input after the `login:' prompt, so
they may need a version of this chat script with a `\d' before the
`\L'. When using UUCP over TCP, some servers will not be handle
the initial carriage return sent by this chat script; in this
case you may have to specify the simple chat script `ogin: \L
word: \P'.
`call-login STRING'
Specify the login name to send with `\L' in the chat script. If
the string is `*' (e.g. `call-login *') the login name will be
fetched from the call out login name and password file (*note
Configuration File Names::.). There is no default.
`call-password STRING'
Specify the password to send with `\P' in the chat script. If the
string is `*' (e.g. `call-password *') the password will be
fetched from the call-out login name and password file (*note
Configuration File Names::.). There is no default.

File: uucp.info, Node: Accepting a Call, Next: Protocol Selection, Prev: Calling Out, Up: sys File
Accepting a Call
----------------
`called-login STRINGS'
The first STRING specifies the login name that the system must use
when calling in. If it is `ANY' (e.g. `called-login ANY') any
login name may be used; this is useful to override a file-wide
default and to indicate that future alternates may have different
login names. Case is significant. The default value is `ANY'.
Different alternates (*note Defaults and Alternates::.) may use
different `called-login' commands, in which case the login name
will be used to select which alternate is in effect; this will
only work if the first alternate (before the first `alternate'
command) uses the `called-login' command.
Additional strings may be specified after the login name; they
are a list of which systems are permitted to use this login name.
If this feature is used, then normally the login name will only
be given in a single `called-login' command. Only systems which
appear on the list, or which use an explicit `called-login'
command, will be permitted to use that login name. If the same
login name is used more than once with a list of systems, all the
lists are concatenated together. This feature permits you to
restrict a login name to a particular set of systems without
requiring you to use the `called-login' command for every single
system; you can achieve a similar effect by using a different
system file for each permitted login name with an appropriate
`called-login' command in the file-wide defaults.
`callback BOOLEAN'
If BOOLEAN is true, then when the remote system calls `uucico'
will hang up the connection and prepare to call it back. This is
false by default.
`called-chat STRINGS'
`called-chat-timeout NUMBER'
`called-chat-fail STRING'
`called-chat-seven-bit BOOLEAN'
`called-chat-program STRINGS'
These commands may be used to define a chat script (*note Chat
Scripts::.) that is run whenever the local system is called by
the system being defined. The chat script defined by the `chat'
command (*note Logging In::.), on the other hand, is used when
the remote system is called. This called chat script might be
used to set special modem parameters that are appropriate to a
particular system. It is run after protocol negotiation is
complete, but before the protocol has been started. See *Note
Logging In:: for additional escape sequence which may be used
besides those defined for all chat scripts. There is no default
called chat script. If the called chat script fails, the
incoming call will be aborted.

File: uucp.info, Node: Protocol Selection, Next: File Transfer Control, Prev: Accepting a Call, Up: sys File
Protocol Selection
------------------
`protocol STRING'
Specifies which protocols to use for the other system, and in
which order to use them. This would not normally be used. For
example, `protocol tfg'.
The default depends on the characteristics of the port and the
dialer, as specified by the `seven-bit' and `reliable' commands.
If neither the port nor the dialer use either of these commands,
the default is to assume an eight-bit reliable connection. The
commands `seven-bit true' or `reliable false' might be used in
either the port or the dialer to change this. Each protocol has
particular requirements that must be met before it will be
considered during negotiation with the remote side.
The `t' and `e' protocols are intended for use over TCP or some
other communication path with end to end reliability, as they do
no checking of the data at all. They will only be considered on
a TCP port which is both reliable and eight bit.
The `g' protocol is robust, but requires an eight-bit connection.
The `f' protocol is intended for use with X.25 connections; it
checksums each file as a whole, so any error causes the entire
file to be retransmitted. It requires a reliable connection, but
only uses seven-bit transmissions. It is a streaming protocol,
so, while it can be used on a serial port, the port must be
completely reliable and flow controlled; many aren't.
The protocols will be considered in the order shown above. This
means that if neither the `seven-bit' nor the `reliable' command
are used, the `t' protocol will be used over a TCP connection and
the `g' protocol will be used over any other type of connection
(subject, of course, to what is supported by the remote system;
it may be assumed that all systems support the `g' protocol).
Note that currently specifying both `seven-bit true' and
`reliable false' will not match any protocol. If this occurs
through a combination of port and dialer specifications, you will
have to use the `protocol' command for the system or no protocol
will be selected at all (the only reasonable choice would be
`protocol f').
A protocol list may also be specified for a port (*note port
file::.), but if there is a list for the system the list for the
port is ignored.
`protocol-parameter CHARACTER STRING ...'
CHARACTER is a single character specifying a protocol. The
remaining strings are a command specific to that protocol which
will be executed if that protocol is used. A typical command is
something like `window 7'. The particular commands are protocol
specific.
The `g' protocol supports the following commands, all of which
take numeric arguments:
`window'
The window size to request the remote system to use. This
must be between 1 and 7 inclusive. The default is 7.
`packet-size'
The packet size to request the remote system to use. This
must be a power of 2 between 32 and 4096 inclusive. The
default is 64, which is the only packet size supported by
many older UUCP packages. Some UUCP packages will even dump
core if a larger packet size is requested.
`startup-retries'
The number of times to retry the initialization sequence.
The default is 8.
`init-retries'
The number of times to retry one phase of the initialization
sequence (there are three phases). The default is 4.
`init-timeout'
The timeout in seconds for one phase of the initialization
sequence. The default is 10.
`retries'
The number of times to retry sending either a data packet or
a request for the next packet. The default is 6.
`timeout'
The timeout in seconds when waiting for either a data packet
or an acknowledgement. The default is 10.
`garbage'
The number of unrecognized bytes to permit before dropping
the connection. This must be larger than the packet size.
The default is 10000.
`errors'
The number of errors (malformed packets, out of order
packets, bad checksums, or packets rejected by the remote
system) to permit before dropping the connection. The
default is 100.
`remote-window'
If this is between 1 and 7 inclusive, the window size
requested by the remote system is ignored and this is used
instead. This can be useful when dealing with some poor
UUCP packages. The default is 0, which means that the
remote system's request is honored.
`remote-packet-size'
If this is between 32 and 4096 inclusive the packet size
requested by the remote system is ignored and this is used
instead. There is probably no good reason to use this. The
default is 0, which means that the remote system's request
is honored.
The `f' protocol is intended for use with error-correcting modems
only; it checksums each file as a whole, so any error causes the
entire file to be retransmitted. It supports the following
commands, both of which take numeric arguments:
`timeout'
The timeout in seconds before giving up. The default is 120.
`retries'
How many times to retry sending a file. The default is 2.
The `t' and `e' protocols are intended for use over TCP or some
other communication path with end to end reliability, as they do
no checking of the data at all. They both support a single
command, which takes a numeric argument:
`timeout'
The timeout in seconds before giving up. The default is 120.
The protocol parameters are reset to their default values after
each call.

File: uucp.info, Node: File Transfer Control, Next: Miscellaneous (sys), Prev: Protocol Selection, Up: sys File
File Transfer Control
---------------------
`call-request BOOLEAN'
The BOOLEAN is checked when the local system places the call. It
determines whether the remote system may request any file
transfers. The default is yes.
`called-request BOOLEAN'
The BOOLEAN is checked when the remote system calls in. It
determines whether the remote system may request any file
transfers. The default is yes.
`request BOOLEAN'
Equivalent to specifying both `call-request BOOLEAN' and
`called-request BOOLEAN'.
`call-transfer BOOLEAN'
The BOOLEAN is checked when the local system places the call. It
determines whether the local system may do file transfers queued
up for the remote system. The default is yes.
`called-transfer BOOLEAN'
The BOOLEAN is checked when the remote system calls in. It
determines whether the local system may do file transfers queued
up for the remote system. The default is yes.
`transfer BOOLEAN'
Equivalent to specifying both `call-transfer BOOLEAN'
`called-transfer BOOLEAN'.
`call-local-size NUMBER STRING'
The STRING is a time string (*note Time Strings::.). The NUMBER
is the size in bytes of the largest file that should be
transferred at a time matching the time string if the local system
placed the call and the request was made by the local system.
This command may appear multiple times in a single alternate. If
this command does not appear, or if none of the time strings
match, there are no size restrictions.
With all the size control commands, the size of a file from the
remote system (as opposed to a file from the local system) will
only be checked if the other system is running this package;
other UUCP packages will not understand a maximum size request,
nor will they inform this package of the size of remote files.
`call-remote-size NUMBER STRING'
Specify the size in bytes of the largest file that should be
transferred at a given time by remote request when the local
system placed the call. This command may appear multiple times
in a single alternate. If this command does not appear, there
are no size restrictions.
`called-local-size NUMBER STRING'
Specify the size in bytes of the largest file that should be
transferred at a given time by local request when the remote
system placed the call. This command may appear multiple times
in a single alternate. If this command does not appear, there are
no size restrictions.
`called-remote-size NUMBER STRING'
Specify the size in bytes of the largest file that should be
transferred at a given time by remote request when the remote
system placed the call. This command may appear multiple times
in a single alternate. If this command does not appear, there are
no size restrictions.
`local-send STRINGS'
Specifies that files in the directories named by the STRINGS may
be sent to the remote system when requested locally (using `uucp'
or `uux'). The directories in the list should be separated by
whitespace. A `~' may be used for the public directory. On a
Unix system, this is typically `/usr/spool/uucppublic'; the public
directory may be set with the `pubdir' command. Here is an
example of `local-send':
local-send ~ /usr/spool/ftp/pub
Listing a directory allows all files within the directory and all
subdirectories to be sent. Directories may be excluded by
preceding them with an exclamation point. For example:
local-send /usr/ftp !/usr/ftp/private ~
means that all files in `/usr/ftp' or the public directory may be
sent, except those files in `/usr/ftp/private'. The list of
directories is read from left to right, and the last directory to
apply takes effect; this means that directories should be listed
from top down. The default is the root directory (i.e., any file
at all may be sent by local request).
`remote-send STRINGS'
Specifies that files in the named directories may be sent to the
remote system when requested by the remote system. The default
is `~'.
`local-receive STRINGS'
Specifies that files may be received into the named directories
when requested by a local user. The default is `~'.
`remote-receive STRINGS'
Specifies that files may be received into the named directories
when requested by the remote system. The default is `~'. On
Unix, the remote system may only request that files be received
into directories that are writeable by the world, regardless of
how this is set.

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