21.3.12

Change ownership of a directory in Linux

chown -R client1:users /home/client1

chown -R username somedir
chgrp -Rv usergroup somedir

15.3.12

Linux shell script- User creation...

#!/bin/bash
# Script to add a user to Linux system
# nimish.in@gmail.com

if [ $(id -u) -eq 0 ]; then
read -p "Enter username : " username
read -s -p "Enter password : " password
egrep "^$username" /etc/passwd >/dev/null
if [ $? -eq 0 ]; then
echo "$username exists!"
exit 1
else
pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
useradd -m -p $pass $username
[ $? -eq 0 ] && echo "User has been added to system!" || echo "Failed to add a user!"
fi
else
echo "Only root may add a user to the system"
exit 2
fi