How do i store the output of a bash command in a variable? [duplicate]

Answer 1

You need to use echo (or printf) to actually put the value of $LINE onto the standard input of the awk command.

LINE=$(ps aux | grep "$1")
PROCESS=$(echo "$LINE" | awk '{print $2}')
echo $PROCESS
kill -9 $PROCESS

There's no need use LINE; you can set PROCESS with a single line

PROCESS=$(ps aux | grep "$1" | awk '{print $2}')

or better, skip the grep:

PROCESS=$(ps aux | awk -v pname="$1" '$1 ~ pname {print $2}')

Finally, don't use kill -9; that's a last resort for debugging faulty programs. For any program that you didn't write yourself, kill "$PROCESS" should be sufficient.