``` !/bin/bash USER=test PASS=$USER GROUP=root HOME=/data/home/$USER if user not exist if [[ $(cat /etc/passwd | grep E '^$USER:' c) == "0" ]]; then u ...
#!/bin/bash
USER=test
PASS=$USER
GROUP=root
HOME=/data/home/$USER
# if user not exist
if [[ $(cat /etc/passwd | grep -E '^$USER:' -c) == "0" ]]; then
# use weak password
sed 's/^password requisite.*/password requisite pam_cracklib.so try_first_pass retry=3 type=/g' -i /etc/pam.d/system-auth
# add user
groupadd $GROUP 2>/dev/null
mkdir -p /data/home && useradd $USER -d /data/home/$HOME -g $GROUP
# add sudo privilege
sed '/$USER ALL=(ALL) NOPASSWD:ALL/d' -i /etc/sudoers
echo "$USER ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
# set password
passwd $USER << EOM
$PASS
$PASS
EOM
fi
