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GZEXE(1)                               General Commands Manual                              GZEXE(1)



NAME
       gzexe - compress executable files in place

SYNOPSIS
       gzexe name ...

DESCRIPTION
       The gzexe utility allows you to compress executables in place and have them automatically un‐
       compress and execute when you run them (at a penalty in performance).  For example if you ex‐
       ecute ``gzexe /usr/bin/gdb'' it will create the following two files:
           -rwxr-xr-x  1 root root 1026675 Jun  7 13:53 /usr/bin/gdb
           -rwxr-xr-x  1 root root 2304524 May 30 13:02 /usr/bin/gdb~
       /usr/bin/gdb~  is  the  original  file  and /usr/bin/gdb is the self-uncompressing executable
       file.  You can remove /usr/bin/gdb~ once you are sure that /usr/bin/gdb works properly.

       This utility is most useful on systems with very small disks.

OPTIONS
       -d     Decompress the given executables instead of compressing them.

SEE ALSO
       gzip(1), znew(1), zmore(1), zcmp(1), zforce(1)

CAVEATS
       The compressed executable is a shell script.  This may create some security holes.   In  par‐
       ticular,  the  compressed executable relies on the PATH environment variable to find gzip and
       some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail).

BUGS
       gzexe attempts to retain the original file attributes on the compressed executable,  but  you
       may have to fix them manually in some cases, using chmod or chown.



                                                                                            GZEXE(1)