jjeong

#!/bin/bash

retry='retry'

if [ $retry = "retry" ]; then
  echo 'true - 1'
fi

if [[ $retry = "retry" ]]; then
  echo 'true - 2'
fi

if [[ "$retry" = "retry" ]]; then
  echo 'true - 3'
fi

세 예제 다 true 리턴 합니다.

#!/usr/bin/env bash

pwd

echo "Are you sure current directory? (Y/N)"
read answer

if [ "$answer" == "y" ] || [ "$answer" == "Y" ]
then
  echo "Yes!!"
fi

echo "done!!"

#!/usr/bin/env bash

pwd

echo "Are you sure current directory? (Y/N)"
read ans
answer=`echo $ans| tr a-z A-Z`

if [ "$answer" == "Y" ]
then
  echo "Yes!!"
fi

echo "done!!"