Apurv day3

Challenges/Day_3/user_mamagement.sh

@@ -0,0 +1,127 @@
+#Author : Apurv Samadder
+#Date : Aug 2 2023
+#Version: v1
+#Day 3  Bash Scripting Challenge - User Account Management.
+
+
+
+#!/bin/bash
+
+#Create a user 
+add_user()
+{
+echo "enter username "
+read username
+
+#echo "Enter password"
+#read pass
+
+if grep "${username}" /etc/passwd >/dev/null 2>&1; then
+
+  echo "User alread present"
+
+else
+	echo "enter password"
+	read pass
+	useradd  -m -p $pass $username && echo "Successfully added user"
+
+fi 
+}
+
+#delete user
+
+delete_user()
+{
+
+if [[ $(id -u) -ne 0 ]]; then
+    echo "This script must be run as root or with sudo privileges."
+    exit 1
+fi
+
+# Prompt the user for the username to delete
+read -p "Enter the username you want to delete: " username
+
+# Check if the username exists
+if id "$username" &>/dev/null; then
+    # Delete the user and their home directory
+    userdel -r "$username"
+    echo "User '$username' and home directory deleted."
+else
+    echo "User '$username' does not exist."
+fi
+}
+
+
+reset_passwd()
+{
+
+if [[ $(id -u) -ne 0 ]]; then
+    echo "This script must be run as root or with sudo privileges."
+    exit 1
+fi
+
+# Prompt the user for the username to changes password
+read -p "Enter the username you want to delete: " username
+
+# Check if the username exists
+if id "$username" &>/dev/null; then
+    # Changes the password if user exist
+    passwd "$username"
+    echo "User '$username' Password changed."
+else
+    echo "User '$username' does not exist."
+fi
+}
+
+list_user()
+{
+	# Read uid column  /etc/passwd
+	for userid in `awk -F: '{print $3}' /etc/passwd`
+        do
+                if ("$userid" >= 1000); then
+                        echo "Valid User" :`cat /etc/passwd | grep $userid | awk -F: '{print $1,$3}'`
+                fi
+        done
+}
+
+
+user_mgmt()
+{
+echo "options"
+echo "-c,--create  create a new user accoutn"
+echo "-d, --delete Delete and existing user account"
+echo "-r, --reset  Reset a password for existing user"
+echo "-l, --list  List all the user in system"
+echo "-h, --help Display this help and exit"
+
+read option
+
+case $option  in
+    -c|--create)
+      add_user
+      ;;
+    -d|--delete)
+      echo "inside delete" 
+      delete_user
+      ;;
+    -r|--reset)
+      echo "inside reset"
+      reset_passwd  
+      ;;
+    -l|--list)
+      list_user
+      echo "inside list" 
+      ;;
+    -h|--help)
+      echo "inside help" 
+      ;;  
+      *)
+      echo "please enter valid option"
+      user_mgmt
+      ;;
+esac
+}
+
+user_mgmt
+
+