I am using crontab for the first time. Want to write a few very simple test cron tasks, and run them.
$crontab * * * * * echo "Hi"
doesn't produce anything.
crontab */1 * * * * echo "hi"
*/1: No such file or directory.
Also, how do I list the currently running cron tasks (not just the ones I own, but ones started by other users such as root as well).
And how do I delete a particular cron task?