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Top Forums Shell Programming and Scripting Discussion: use "/usr/bin/env" or not Post 302973165 by MadeInGermany on Sunday 15th of May 2016 01:58:49 PM
Old 05-15-2016
Why should a missing /bin/bash be more likely than a missing /usr/bin/env?
Well, it has been, for some time, 20 years ago, when bash was new. When the Internet was unknown by the public.
Today a shell can and must be assumed in /bin, only this eliminates surprises (=risks) of a manipulated PATH.
Your OS has perl only in /usr/bin? Open a bug with your vendor to also support /bin/perl! Even better: have the vendor link /bin with /usr/bin!
 

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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 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)
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