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Operating Systems Linux Red Hat How to detect kind of command for root only? Post 302599385 by vishal_vsh1 on Friday 17th of February 2012 02:36:10 AM
Old 02-17-2012
ok let me give you an example.

If you write a script in which you put some operation which only root can do, for example reading shadow file etc.. and make that script executable by everyone...
anybody can execute the script but script wont work for everyone, since they do not have access to read/write shadow file...
Here everybody can execute your script(run command) but can not perform the right function(perform action).

Same in this case fdisk is nothing but an executable file which is executable by anyone but operation mentioned in the file are not meant to be performed by them.

I hope its better with example.
This User Gave Thanks to vishal_vsh1 For This Post:
 

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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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