gistfile1.txt

#!/bin/bash

# Define functions
function func1() {
  echo "Executing Function 1..."
  # Add your commands for func1 here
}

function func2() {
  echo "Executing Function 2..."
  # Add your commands for func2 here
}

function func3() {
  echo "Executing Function 3..."
  # Add your commands for func3 here
}

# Display usage information if no argument is provided
if [ "$#" -eq 0 ]; then
  echo "Usage: $0 {func1|func2|func3}"
  exit 1
fi

# Choose the function to run based on the first argument
case $1 in
  func1)
    func1
    ;;
  func2)
    func2
    ;;
  func3)
    func3
    ;;
  *)
    echo "Invalid argument: $1"
    echo "Usage: $0 {func1|func2|func3}"
    exit 1
    ;;
esac