gzexe(1) [netbsd man page]

GZEXE(1)						    BSD General Commands Manual 						  GZEXE(1)

NAME

     gzexe -- create auto-decompressing executables

SYNOPSIS

     gzexe [-d] file ...

DESCRIPTION

     The gzexe utility uses gzip(1) to compress executables, producing executables that decompress on-the-fly when executed.  This saves disk
     space, at the cost of slower execution times.  The original executables are saved by copying each of them to a file with the same name with a
     '~' suffix appended.  After verifying that the compressed executables work as expected, the backup files can be removed.

     The options are as follows:

     -d      Decompress executables previously compressed by gzexe.

     The gzexe program refuses to compress non-regular or non-executable files, files with a setuid or setgid bit set, files that are already com-
     pressed using gzexe or programs it needs to perform on-the-fly decompression: sh(1), mktemp(1), rm(1), echo(1), tail(1), gzip(1), and
     chmod(1).

SEE ALSO

     gzip(1)

CAVEATS

     The gzexe utility replaces files by overwriting them with the generated compressed executable.  To be able to do this, it is required that
     the original files are writable.

BSD
								   July 30, 2003							       BSD

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 uncompress and execute when you run them (at a
       penalty in performance).  For example if you execute ``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 particular, 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)