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Full Discussion: sudoers syntax
Top Forums UNIX for Advanced & Expert Users sudoers syntax Post 70311 by chuckuykendall on Wednesday 27th of April 2005 11:48:52 AM
Old 04-27-2005
sudoers syntax

I'm stuck with a dilemma. I am trying to control userid's access to the su command in such a way that he will not be able to su to root (su, su -, su root, su - root) but he will be able to su to any other user. I have tried the following syntax:

Code:
userid  ALL=/usr/bin/su ?*, !/usr/bin/su *root*

This catches "su", "su root", and "su - root", but not "su -". I've also tried the follow syntax:

Code:
Cmnd_Alias  SU_TO_ROOT = /usr/bin/su, /usr/bin/su -, /usr/bin/su *root*, /usr/bin/su - *root*
userid  ALL=ALL, !SU_TO_ROOT

This catches all four types of su'ing to root but it also catches all other su attempts, which I would like to leave open. Any suggestions?
 

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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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