As Joe said, putting a character ‘#’ in the beginning of a line makes the line just a comment, so that line will not be run.
You have a sleep command and kalu command on the same line.
If you don’t need the sleep either, then comment the whole line as follows:
#sleep 5s && kalu &
If you need the sleep but not kalu, then do this:
sleep 5s #&& kalu &
As you may see or guess, the ‘#’ character makes the rest of the line as a comment only, and a comment will not be run.
But of course, you may delete the tail of the first line by removing the ‘&& kalu &’ part.