I need to write a script that will add a line to a text file if Enter is pressed.
But, if Ctrl+D is pressed, I need to exit that loop in the bash.
touch texttest.txt LINE="0" while true; do read LINE; if [ "$LINE" == "^D" ]; then break else echo "$LINE" >> texttest.txt fi done
Currently have something like this but cannot figure out how I am do exit the while loop when Ctrl+D is pressed instead of Enter.
You’re overthinking it. All you need is this:
cat > texttest.txt
Cat will read from STDIN if you’ve not told it different. Since it’s reading from STDIN, it will react to the control character Ctrl+D without your having to specify it. And since Ctrl+D is the only thing that will finish the
cat subprocess, you don’t even need to wrap it in a loop.