11-30-2012
About " . ":
If you are a ordinary user or you can afford adding . in your $PATH (and understand its possible consequences...) at the condition its at the end of your PATH variable ( for security reason already mentionned ), if you were a developper you would I imagine create a bin directory in your $HOME and add that to your PATH variable instead, avoiding like that the risk of being spoofed...
About /usr/local/bin: Trust what the mods above already mentionned, since /usr/local/bin is set in PATH by default on most systems, it is not a good idea at all to let people other than root add new programs..., I for instance dont even trust the content.. and so remove /usr/local/bin from my PATH, and if I need a program that is there I check before its content.. You can always use aliases to your executable with fancy long absolute paths...
I saw a hole production fail for 5 weeks because someone not listening to what I said add . at the beginning of PATH in /etc/profile...
The side effects can be disastrous...
Last edited by vbe; 11-30-2012 at 10:25 AM..
Reason: typos
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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
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/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)