Genera un password para un usuario y se lo guarda en ~/.passwd

autopasswd

#!/bin/bash

USER=$1
CHARS=12

HOME=$(awk -F: -v v="$USER" '{if ($1==v) print $6}' /etc/passwd)
PASSWD=$(< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c $CHARS)

if [ -z "$HOME" ]; then
    echo "$USER is a user?"
    exit
fi

touch $HOME/.passwd
chown $USER $HOME/.passwd
chmod 600 $HOME/.passwd
echo $PASSWD > $HOME/.passwd
echo $PASSWD | passwd --stdin $USER