lowercase usernames

jconf

@@ -39,16 +39,72 @@ if [ "$#" -lt 1 ]; then
     exit 1
 fi
 
+if [[ "$EUID" -ne 0 ]]; then
+    echo "Run the script as root"
+    exit 2
+fi
+
+
 cmd=$1
 case "$cmd" in
     adduser)
-        echo
+        USER=$(echo "$2" | tr "[:upper:]" "[:lower:]")
+        exist=$(awk -F: -v username="$USER" '{if ($1 == username && $3 >= 1000 && $1 != "nobody") {print 1; found=1; exit}} END {if (!found) print 0}' /etc/passwd)
+        if [ "$exist" -eq  1 ]; then
+            echo "$USER user already exists"
+        else
+            read -rp "Do you want to create an user account $USER [y/N]:" yn
+            case $yn in
+                [Yy])
+                    useradd "$USER"
+                    echo "Enter the password for $USER"
+                    passwd "$USER"
+                    echo "$USER user account created successfully"
+                    ;;
+                [Nn])
+                    exit 1
+                    ;;
+                * )
+                    echo "Please answer Y or N."
+                    ;;
+            esac
+        fi
+        exit 1
         ;;
     deluser)
-        echo
+        USER=$(echo "$2" | tr "[:upper:]" "[:lower:]")
+        exist=$(awk -F: -v username="$USER" '{if ($1 == username && $3 >= 1000 && $1 != "nobody") {print 1; found=1; exit}} END {if (!found) print 0}' /etc/passwd)
+        if [ "$exist" -eq  0 ]; then
+            echo "$USER user doesn't exist"
+            exit 1
+        else
+            read -rp "Do you want to delete $USER user account? [y/N]:" yn
+            case $yn in
+                [Yy])
+                    ;;
+                *)
+                    exit 1
+                    ;;
+            esac
+            read -rp "This DELETES $USER's data, are you sure? [y/N]:" yn
+            case $yn in
+                [Yy])
+                    userdel -rRZ "$USER";
+                    echo "$USER user account deleted successfully"
+                    ;;
+                [Nn])
+                    exit 1
+                    ;;
+                * )
+                    echo "Please answer Y or N."
+                    ;;
+            esac
+        fi
+        exit 1
         ;;
-    listusers)
-        echo
+    listusers|ls)
+        husers=$(awk -F: '{ if ($3 >= 1000 && $1 != "nobody" ) {print $1}}' /etc/passwd)
+        echo "$husers"
         ;;
     start)
         echo