mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-03 13:51:58 +03:00
93 lines
3.9 KiB
Plaintext
93 lines
3.9 KiB
Plaintext
FUNZIP(1L) FUNZIP(1L)
|
|
|
|
NAME
|
|
funzip - filter for extracting from a ZIP archive in a pipe
|
|
|
|
SYNOPSIS
|
|
funzip [-password] [input[.zip|.gz]]
|
|
|
|
ARGUMENTS
|
|
[-password]
|
|
Optional password to be used if ZIP archive is encrypted.
|
|
Decryption may not be supported at some sites. See DESCRIPTION
|
|
for more details.
|
|
|
|
[input[.zip|.gz]]
|
|
Optional input archive file specification. See DESCRIPTION for
|
|
details.
|
|
|
|
DESCRIPTION
|
|
funzip without a file argument acts as a filter; that is, it assumes
|
|
that a ZIP archive (or a gzip'd(1) file) is being piped into standard
|
|
input, and it extracts the first member from the archive to stdout.
|
|
When stdin comes from a tty device, funzip assumes that this cannot be
|
|
a stream of (binary) compressed data and shows a short help text,
|
|
instead. If there is a file argument, then input is read from the
|
|
specified file instead of from stdin.
|
|
|
|
A password for encrypted zip files can be specified on the command line
|
|
(preceding the file name, if any) by prefixing the password with a
|
|
dash. Note that this constitutes a security risk on many systems; cur-
|
|
rently running processes are often visible via simple commands (e.g.,
|
|
ps(1) under Unix), and command-line histories can be read. If the
|
|
first entry of the zip file is encrypted and no password is specified
|
|
on the command line, then the user is prompted for a password and the
|
|
password is not echoed on the console.
|
|
|
|
Given the limitation on single-member extraction, funzip is most useful
|
|
in conjunction with a secondary archiver program such as tar(1). The
|
|
following section includes an example illustrating this usage in the
|
|
case of disk backups to tape.
|
|
|
|
EXAMPLES
|
|
To use funzip to extract the first member file of the archive test.zip
|
|
and to pipe it into more(1):
|
|
|
|
funzip test.zip | more
|
|
|
|
To use funzip to test the first member file of test.zip (any errors
|
|
will be reported on standard error):
|
|
|
|
funzip test.zip > /dev/null
|
|
|
|
To use zip and funzip in place of compress(1) and zcat(1) (or gzip(1L)
|
|
and gzcat(1L)) for tape backups:
|
|
|
|
tar cf - . | zip -7 | dd of=/dev/nrst0 obs=8k
|
|
dd if=/dev/nrst0 ibs=8k | funzip | tar xf -
|
|
|
|
(where, for example, nrst0 is a SCSI tape drive).
|
|
|
|
BUGS
|
|
When piping an encrypted file into more and allowing funzip to prompt
|
|
for password, the terminal may sometimes be reset to a non-echo mode.
|
|
This is apparently due to a race condition between the two programs;
|
|
funzip changes the terminal mode to non-echo before more reads its
|
|
state, and more then ``restores'' the terminal to this mode before
|
|
exiting. To recover, run funzip on the same file but redirect to
|
|
/dev/null rather than piping into more; after prompting again for the
|
|
password, funzip will reset the terminal properly.
|
|
|
|
There is presently no way to extract any member but the first from a
|
|
ZIP archive. This would be useful in the case where a ZIP archive is
|
|
included within another archive. In the case where the first member is
|
|
a directory, funzip simply creates the directory and exits.
|
|
|
|
The functionality of funzip should be incorporated into unzip itself
|
|
(future release).
|
|
|
|
SEE ALSO
|
|
gzip(1L), unzip(1L), unzipsfx(1L), zip(1L), zipcloak(1L), zipinfo(1L),
|
|
zipnote(1L), zipsplit(1L)
|
|
|
|
URL
|
|
The Info-ZIP home page is currently at
|
|
http://www.info-zip.org/pub/infozip/
|
|
or
|
|
ftp://ftp.info-zip.org/pub/infozip/ .
|
|
|
|
AUTHOR
|
|
Mark Adler (Info-ZIP)
|
|
|
|
Info-ZIP 20 April 2009 (v3.95) FUNZIP(1L)
|