admin.sh

#!/bin/bash
PS3="Your choice: "
select ITEM in "Add User" "List All Processes" "Kill Process" "Install Program" "Quit"
do
  if [[ $REPLY -eq 1 ]]
  then
    read -p "Enter username: " username
    output="$(grep -w $username /etc/passwd)"
    if [[ -n $output ]]
    then
      echo "The username $username already exists."
    else
      sudo useradd -m -s /bin/bash "$username"
      if [[ $? -eq 0 ]]
      then
        echo "The user $username was added successfully."
        tail -n 1 /etc/passwd
      else
        echo "There was an error adding the user $username."
      fi
    fi
  elif [[ $REPLY -eq 2 ]]
  then 
    echo "Listing all processes..."
    sleep 1
    ps -ef 
  elif [[ $REPLY -eq 3 ]]
  then
    read -p "Enter the process to kill: " process
    pkill $process
  elif [[ $REPLY -eq 4 ]]
  then 
    read -p "Enter the program to install: " app
    sudo pacman -Syu && sudo pacman -S $app
  elif [[ $REPLY -eq 5 ]]
  then
    echo "Quitting..."
    sleep 1
    exit
  else
    echo "Invalid menu selection."
  fi
done