cPanel - Bash script To Change password of all mail accounts

 Bash script To Change password of all mail accounts

The bash script given below will change the password of all the mail accounts in a cpanel server. The new password with mail account user name will be saved in to '/root/mailaccounts.txt'.

#!/bin/bash -   

#title          :changeallmailpass.sh

#description    :To Change password of all mail accounts in a cPanel Server

#author         :Arun Ghosh

#date           :20130812

#version        :1.0   

#usage          :./changeallmailpass.sh

#notes          :      

#bash_version   :4.2.25(1)-release

#============================================================================

genpasswd() {

        tr -dc A-Za-z0-9_ < /dev/urandom | head -c 12 | xargs

}

cat /dev/null > /root/mailaccounts.txt

CP_ACCOUNTS=`ls -1A /var/cpanel/users/`

for CP_USER in `echo -n $CP_ACCOUNTS`

do

    USER_DOMAIN=`grep -i ^dns /var/cpanel/users/$CP_USER |cut -d= -f2`

    for DOMAIN in `echo -n "$USER_DOMAIN"`

    do

        SHADOW_FILE="/home/$CP_USER/etc/$DOMAIN/shadow"

        if [ -f $SHADOW_FILE ] && [ -s $SHADOW_FILE ]

        then

            cat /dev/null > "/home/$CP_USER/etc/$DOMAIN/shadow.tmp"

            for shadow in `cat $SHADOW_FILE`

            do

                NEW_PASS=$(genpasswd)

                MD5_PASS=$(openssl passwd -1 $NEW_PASS)

                user=$(echo $shadow | cut -d":" -f1)

                rest=$(echo $shadow | cut -d":" -f3-)

                echo -e "$NEW_PASS\t$user@$DOMAIN" >> "/root/mailaccounts.txt"

                echo "$user:$MD5_PASS:$rest" >> "/home/$CP_USER/etc/$DOMAIN/shadow.tmp"

               

            done

            mv "/home/$CP_USER/etc/$DOMAIN/shadow" "/home/$CP_USER/etc/$DOMAIN/shadow.$(date +%s)"

            mv "/home/$CP_USER/etc/$DOMAIN/shadow.tmp" "/home/$CP_USER/etc/$DOMAIN/shadow"

            chmod 640 "/home/$CP_USER/etc/$DOMAIN/shadow"

            chown $CP_USER:$CP_USER "/home/$CP_USER/etc/$DOMAIN/shadow"        

        fi

    done

done