How to change the Linux user's password in single command

Changing the Linux user's password in one command

Chpasswd reads a list of user name and password pairs from standard input and uses this information to update a group of existing users

chpasswd - update passwords in batch mode

Syntax    -  user_name:password

 By default the supplied password must be in clear-text. Also the password age will be updated, if present.

#echo user:password | /usr/sbin/chpasswd