Shell Programming and Scripting

#!/bin/bash
MENUSTRING1="==================================="
MENUSTRING2="---------------------------------"

function DisplayMenu()
{
 
 echo "$MENUSTRING1"
 echo "$MENUSTRING2"
 echo "Select an option from the menu"
 echo "$MENUSTRING2"
 echo "$MENUSTRING1"

 echo "[1] Lock an account by prepending LK to the password field in etc/shadow"
 echo "[2] Force a change of password by mod password expiry and grace period"
 echo         "so that the user has at least 1 week to login and change the password"
 echo "[3] Set an account so that it expires at a particular date"
 echo "[4] set a new password(using passwd)For this purpose, a modified version"
 echo      "of passwd that takes two extra arguments will be supplied"
 echo      "since the real passwd requires superuser privileges to run."
 echo "[5] Change the home directory path for a user"
 echo "[6] Change the default shell for a user"
 echo "[7] EXIT" 
 
}

function menuInput()
{

  read USERCHOICE
 echo "Executing your selected option"
 
 if [ $USERCHOICE -eq 1 ]; then
 echo "you have chosen to lock the account using the shadow file"
 lockAccount

 else
 echo Unkown Option $USERHCOICE
 fi

}

function lockAccount()
{
  echo "Successfully locked the account"
}

DisplayMenu
menuInput