49 lines
2.3 KiB
Plaintext
49 lines
2.3 KiB
Plaintext
|
** README for file(1) Command **
|
||
|
|
@(#) $Header: /cvsroot/src/usr.bin/file/Attic/README,v 1.1.1.1 1993/03/21 09:45:37 cgd Exp $
|
||
|
|
|
||
|
|
This is Ian Darwin's (copyright but distributable) file(1)
|
||
|
|
command. It follows the USG (Sys V) model of the file command,
|
||
|
|
rather than the Research (V7) version or the V7-derived Berkeley
|
||
|
|
one. That is, there is a file (/etc/magic) that contains much
|
||
|
|
of the ritual information that is the source of this program's
|
||
|
|
power. It knows a little more magic (including tar archives)
|
||
|
|
than System V; the /etc/magic parsing seems to be compatible
|
||
|
|
with the (poorly documented) System V /etc/magic format (with
|
||
|
|
one exception; see the man page).
|
||
|
|
|
||
|
|
In addition, the /etc/magic file is built from a subdirectory
|
||
|
|
for easier maintenance. I will act as a clearinghouse for
|
||
|
|
magic numbers assigned to all sorts of data files that
|
||
|
|
are in reasonable circulation. Send your magic numbers,
|
||
|
|
in magic(4) format please, to the author, Ian Darwin,
|
||
|
|
{utzoo|ihnp4}!darwin!ian, ian@sq.com.
|
||
|
|
|
||
|
|
LEGAL.NOTICE - read this first.
|
||
|
|
README - read this second (you are currently reading this file).
|
||
|
|
PORTING - read this only if the program won't compile.
|
||
|
|
Makefile - read this next, adapt it as needed (particularly
|
||
|
|
the location of the old existing file command and
|
||
|
|
the man page layouts), type "make" to compile,
|
||
|
|
"make try" to try it out against your old version.
|
||
|
|
Expect some diffs, particularly since your original
|
||
|
|
file(1) may not grok the imbedded-space ("\ ") in
|
||
|
|
the current magic file, or may even not use the
|
||
|
|
magic file.
|
||
|
|
apprentice.c - parses /etc/magic to learn magic
|
||
|
|
ascmagic.c - third & last set of tests, based on hardwired assumptions.
|
||
|
|
core - not included in distribution due to mailer limitations.
|
||
|
|
debug.c - includes -c printout routine
|
||
|
|
file.1 - man page for the command
|
||
|
|
magic.4 - man page for the magic file, courtesy Guy Harris.
|
||
|
|
Install as magic.4 on USG and magic.5 on V7 or Berkeley; cf Makefile.
|
||
|
|
file.c - main program
|
||
|
|
file.h - header file
|
||
|
|
fsmagic.c - first set of tests the program runs, based on filesystem info
|
||
|
|
is_tar.c - knows about tarchives (courtesy John Gilmore).
|
||
|
|
magdir - directory of /etc/magic pieces
|
||
|
|
names.h - header file for ascmagic.c
|
||
|
|
softmagic.c - 2nd set of tests, based on /etc/magic
|
||
|
|
strtok.c, getopt.c - in case you them (courtesy of Henry Spencer).
|
||
|
|
strtol.c, strchr.c - in case you need them - public domain.
|
||
|
|
tst - simple test suite, built from tst/Makefile
|