chpasswd

Change the passwords for multiple users by using stdin. tldr-pages

On Linux

Linux

Change the password for a specific user

printf "username:new_password" | sudo chpasswdIdentify

Change the passwords for multiple users (The input text must not contain any spaces.)

printf "username_1:new_password_1\nusername_2:new_password_2" | sudo chpasswdIdentify

Change the password for a specific user, and specify it in encrypted form

printf "username:new_encrypted_password" | sudo chpasswd --encryptedIdentify

Change the password for a specific user, and use a specific encryption for the stored password

printf "username:new_password" | sudo chpasswd --crypt-method NONEIdentify