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58 lines
1.4 KiB
Groff
58 lines
1.4 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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.I "name .\|.\|."
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.SH DESCRIPTION
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The
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.B 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 /usr/bin/gdb'' 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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-rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb
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-rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~
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.fi
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/usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing
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executable file. You can remove /usr/bin/gdb~ once you are sure that
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/usr/bin/gdb 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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.BR gzip (1),
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.BR znew (1),
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.BR zmore (1),
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.BR zcmp (1),
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.BR 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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.B gzip
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and some standard utilities
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.RB ( basename ,
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.BR chmod ,
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.BR ln ,
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.BR mkdir ,
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.BR mktemp ,
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.BR rm ,
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.BR sleep ,
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and
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.BR tail ).
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.SH "BUGS"
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The
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.B gzexe
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command
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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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.B chmod
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or
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.BR chown .
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