Using on-the-fly decompression for UFS filesystems

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LEARN ABOUT FREEBSD

gzexe

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
								 January 26, 2007							       BSD

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