Bash Shell Scripting - detect the Enter key

Question

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

read -n1 key
if [ $key == \"\\n\" ]
   echo \"@@@\"
fi

But this

Answer 1

Also it is good idea to define empty $IFS (internal field separator) before making comparisons, because otherwise you can end up with " " and "\n" being equal.

So the code should look like this:

# for distinguishing " ", "\t" from "\n"
IFS=

read -n 1 key
if [ "$key" = "" ]; then
   echo "This was really Enter, not space, tab or something else"
fi