Решение
Bash:
#!/usr/bin/bash
for user in user1 user2 user3; do
pass=$(tr -cd '[:alnum:]' < /dev/urandom | fold -w16 | head -n 1)
echo $pass | passwd --stdin $user >/dev/null
echo New password for $user: $pass
done
Код:
[root@f34dev ~]# ./passchange.sh
New password for user1: jieVb2tjmGBm4Z5A
New password for user2: e2bRXB1vXGWuxxLy
New password for user3: zzgotM6ovBbnBfaZ
[root@f34dev ~]#