Unix
A small collection.
Utilities
Run in a loop with delay
Lightweight way to run something in a loop with a delay. No need to actually write the loop. This will run the command every 5 seconds:
watch -n 5 $commandFor example, this will run until output of a curl request changes and notify telegram. You can use tmux/screen to keep the command alive.
watch -n 60 -g -d -x curl -s 'https://google.com'; telegram-send "change detected"Gotchas
If you want to run a command remotely, you can use ssh to run the command. However, if you want to run a command with an & in it, you need to escape it. Here the ā&d=eā part of the URL gets swallowed by the shell:
ssh oracle "echo a?b=c&d=e"
# output: a?b=cBack