44 lines
1.3 KiB
Groff
44 lines
1.3 KiB
Groff
.TH GZEXE 1
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.SH NAME
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gzexe \- compress executable files in place
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.SH SYNOPSIS
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.B gzexe
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[ name ... ]
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.SH DESCRIPTION
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The
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.I gzexe
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utility allows you to compress executables in place and have them
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automatically uncompress and execute when you run them (at a penalty
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in performance). For example if you execute ``gzexe /bin/cat'' it
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will create the following two files:
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.nf
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.br
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-r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat
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-r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~
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.fi
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/bin/cat~ is the original file and /bin/cat is the self-uncompressing
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executable file. You can remove /bin/cat~ once you are sure that
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/bin/cat works properly.
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.PP
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This utility is most useful on systems with very small disks.
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.SH OPTIONS
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.TP
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.B \-d
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Decompress the given executables instead of compressing them.
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.SH "SEE ALSO"
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gzip(1), znew(1), zmore(1), zcmp(1), zforce(1)
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.SH CAVEATS
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The compressed executable is a shell script. This may create some
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security holes. In particular, the compressed executable relies
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on the PATH environment variable to find
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.I gzip
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and some other utilities
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.I (tail, chmod, ln, sleep).
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.SH "BUGS"
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.I gzexe
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attempts to retain the original file attributes on the compressed executable,
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but you may have to fix them manually in some cases, using
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.I chmod
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or
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.I chown.
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