Using the passwd command from within a shell script

Question

I\'m writing a shell script to automatically add a new user and update their password. I don\'t know how to get passwd to read from the shell script instead of interactively

Answer 1

For those who need to 'run as root' remotely through a script logging into a user account in the sudoers file, I found an evil horrible hack, that is no doubt very insecure:

sshpass -p 'userpass' ssh -T -p port user@server << EOSSH
sudo -S su - << RROOT
userpass
echo ""
echo "*** Got Root ***"
echo ""
#[root commands go here]
useradd -m newuser
echo "newuser:newpass" | chpasswd
RROOT
EOSSH