fleet/scripts/mdm/linux/linux-lock.sh
2024-07-29 10:00:48 -04:00

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#!/bin/sh
# Disable automatic login for common display managers
disable_autologin() {
# GDM (GNOME Display Manager)
if [ -f /etc/gdm3/custom.conf ]; then
sed -i '/^AutomaticLoginEnable/s/^/#/' /etc/gdm3/custom.conf
sed -i '/^AutomaticLogin/s/^/#/' /etc/gdm3/custom.conf
fi
# LightDM
if [ -f /etc/lightdm/lightdm.conf ]; then
sed -i '/^autologin-user=/s/^/#/' /etc/lightdm/lightdm.conf
fi
# Add similar cases for other display managers if needed
}
# Disable automatic login
disable_autologin
# Loop through all users in /etc/passwd
awk -F':' '{ if ($3 >= 1000 && $3 < 60000) print $1 }' /etc/passwd | while read user
do
if [ "$user" != "root" ]; then
echo "Logging out $user"
pkill -KILL -u "$user" # Kill user processes. This will log out logged-in users.
passwd -l "$user" # Lock the user account
fi
done
# Logout any non-passwd users
logged_in=$(users | tr ' ' '\n' | sort | uniq)
for user in $logged_in; do
[ "$user" = "root" ] && continue
echo "Logging out $user"
pkill -KILL -u "$user"
done
# Create the pam_nologin file
touch /etc/nologin
echo "All non-root users have been logged out and their accounts locked."