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Hi,

for debugging purposes I suggest you add some these logging rules

# Logging rules of what packages are dropped
iptables -A INPUT -j LOG
iptables -A OUTPUT -j LOG
iptables -A FORWARD -j...

The standard host resolution is determined by /etc/nsswitch.conf
Add dns to the hosts line!
Example
hosts: files dns

format for /etc/sudoers file ...
who where = (as_whom) what
the sample below will allow jack to only run /dir/command only on host17 only as user jill ... see man sudoers for more info ...
jack...

Here is a bash approach:
#!/bin/bash

while read line
do
for num in ${line//,/ }
do
if [[ "$num" =~ \- ]]
then
if [[...

Single-quote the trap command so that the variable is evaluated only when the trap signal occurs and not when the trap is being set.
trap 'rm -f $PIPE;exit' EXIT

./myscript | ssh username@host ./otherscript

Also possible is things like netcat (nc).

Use a pipe to supply input to the code block:
awk '{print $2}' FS=":" "${FILE}" | {
read M_GRP_ID || m_fail 1 "Error: Read failed 1 (${FUNCNAME})"
read M_GRP_WAIT || m_fail 1...

Try setting the setgid bit on the directory's entry to the desired group; $ chmod g+s tdir
$ chown :groupx tdir
$ ls -lad tdir
drwxr-srwx 2 nobody groupx 4096 Aug 26 12:54 tdir/
$ touch tdir/xy...

Suppose you want a group, say gid=10 which is staff, using POSIX compliant id:


[ `id -g` -eq 10 ] && M_ROOT=/usr/local/bin/m_prog
[ "`id -gn`" = "staff" ] && M_ROOT=/usr/local/bin/m_prog


...

When a user with ksh as their login shell logs in, ksh executes /etc/profile and then $HOME/.profile. Your system administrator could use id -gn or id -Gn to determine if the user is a member of...

On most systems you have some sort of system-wide profile, which is called before individual profiles are called. Use the id command to get the group set of the user logging on there and implement a...

it's very likely shell code was placed directly in the command="" then. it replaces the clients requested command in that the client no longer has any choice of what is ran. it sounds like exactly...

Every shell has a cd command. They all invoke chdir() to accomplish it.

dead process == zombie? What is your definition of a dead process?

The OS cycles the pid of new processes from 1 -> signed short max for most systems.

You should be checking the user/owner...