cPanel - Bash script To change/reset a single email account password using command line

Bash script To change/reset password of a mail account in cPanel via command line

The bash script given below will help you to change the password of a single mail account in a cpanel server via command line or terminal.

Let the script name is 'changemailpass.sh'. You can change the password of a mail account by using the following format.

# ./changemailpass.sh <mail_account> <newpassword>

#!/bin/bash -  
#title          :changemailpass.sh
#description    :To change password of a single mail account in cPanel via terminal
#author         :Arun Ghosh
#date           :20130811
#version        :1.0   
#usage          :./changemailpass.sh
#notes          :      
#bash_version   :4.2.25(1)-release
#============================================================================

MAIL_USER=$1
NEW_PASS=$2

MAIL_FLAG=false
DOMAIN=$(echo $MAIL_USER | cut -d"@" -f2)
MAIL=$(echo $MAIL_USER | cut -d"@" -f1)

EXIST=`grep ^$DOMAIN /etc/userdomains`

if [ "$EXIST" ]
then

CP_USER=`grep ^$DOMAIN /etc/userdomains | cut -d":" -f2 | tr -d ' '`
SHADOW_FILE="/home/$CP_USER/etc/$DOMAIN/shadow"

cat /dev/null > "/home/$CP_USER/etc/$DOMAIN/shadow.tmp"
for shadow in `cat /home/$CP_USER/etc/$DOMAIN/shadow`
do

pass=$(openssl passwd -1 $NEW_PASS)
user=$(echo $shadow | cut -d":" -f1)
rest=$(echo $shadow | cut -d":" -f3-)

if [ "$user" == "$MAIL" ]
then
MAIL_FLAG=true
echo "$user":$pass:$rest >> /home/$CP_USER/etc/$DOMAIN/shadow.tmp
else
echo $shadow >>/home/$CP_USER/etc/$DOMAIN/shadow.tmp
fi

done

if [ $MAIL_FLAG = false ]
then
echo "$1 not exists..!!";
elif [ $MAIL_FLAG = true ]
then

echo "$1 password changed to: $2"
fi
mv "/home/$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"
else
echo "Domain not in the server"
fi