I need to compare my input with Enter/Return key...

read -n1 key

if [ $key == "\n" ]

echo "@@@"

fi

But this is not working.. What is wrong with this code

解決方案

Several issues with the posted code. Inline comments detail what to fix:

#!/bin/bash

# ^^ Bash, not sh, must be used for read options

read -s -n 1 key # -s: do not echo input character. -n 1: read only 1 character (separate with space)

# double brackets to test, single equals sign, empty string for just 'enter' in this case...

# if [[ ... ]] is followed by semicolon and 'then' keyword

if [[ $key = "" ]]; then

echo 'You pressed enter!'

else

echo "You pressed '$key'"

fi

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