More improvements to rename-user.sh

pi4/files/root/rename-user.sh

@@ -3,6 +3,16 @@
 # Renames a user
 # Required arguments: old user name, new user name
 
+set -e
+
+question() {
+    echo
+    echo "$@"
+    read -r answer
+    answer="${answer:0:1}"
+    answer="${answer^}"
+}
+
 if [[ $# -ne 2 ]]; then
     echo "Usage: $0 old-user new-user"
     exit 1
@@ -20,13 +30,11 @@ fi
 # Make sure old user is not logged in
 if pgrep -u "$oldUser" >/dev/null; then
     echo "The user $oldUser is currently logged in or has running processes. Cannot continue."
-    echo "Would you like to forcibly log out $oldUser? (Y/N)"
-    read -r answer
-    answer="${answer:0:1}"
-    answer="${answer^}"
+    question "Would you like to forcibly log out $oldUser? (Y/N)"
     if [[ "$answer" != "Y" ]]; then
         exit 1
     fi
+    systemctl stop display-manager
     loginctl terminate-user "$oldUser"
     sleep 2
     if pgrep -u "$oldUser" >/dev/null; then
@@ -48,17 +56,20 @@ if ! [[ "$newUser" =~ ^[a-z_][a-z0-9_-]{0,31}$ ]]; then
 fi
 
 # Passed all safety checks, proceed with the rename
+echo "Renaming $oldUser to $newUser..."
 groups=$(id -nG "$oldUser")
 groups="${groups// /,}"
 usermod -G "$groups" -m -d "/home/$newUser" -l "$newUser" "$oldUser"
 
 # Update nodm.conf if it exists
 if [[ -e /etc/nodm.conf ]]; then
+    echo "Updating /etc/nodm.conf..."
     sed -i -e "s#^NODM_USER=.*#NODM_USER='$newUser'#" -e "s#^NODM_XSESSION=.*#NODM_XSESSION='/home/$newUser/.xinitrc'#" /etc/nodm.conf
 fi
 
 # Copy over crontab if it exists
 if crontab -u "$oldUser" -l >/tmp/${oldUser}_crontab.bak 2>/dev/null; then
+    echo "Copying over crontab..."
     if crontab -u "$newUser" "/tmp/${oldUser}_crontab.bak"; then
         rm "/tmp/${oldUser}_crontab.bak"
     else
@@ -69,18 +80,24 @@ fi
 
 # Update linger
 if [[ -e "/var/lib/systemd/linger/$oldUser" ]]; then
+    echo "Enabling linger..."
     mv "/var/lib/systemd/linger/$oldUser" "/var/lib/systemd/linger/$newUser"
 fi
 
-
 # Optionally update files in new home directory
+echo
 echo "Would you like to search for references to $oldUser and update them to $newUser in files located in /home/$newUser?"
-echo "This can take a while. (Y/N)"
-read -r answer
-answer="${answer:0:1}"
-answer="${answer^}"
+question "This can take a while. (Y/N)"
 if [[ "$answer" == "Y" ]]; then
-    find "/home/$newUser" -type f -exec sed -i "s|$oldUser|$newUser|g" "{}" \;
+    echo "Updating files..."
+    find "/home/$newUser" -type f -exec grep -Iq . "{}" \; -and -exec sed -i "s|$oldUser|$newUser|g" "{}" \;
+fi
+
+echo
+echo "Rename complete. The user, $newUser, is now available."
+question "Would you like to reboot?"
+if [[ "${answer}" == "Y" ]]; then
+    reboot
 fi
 
 exit 0