watch — periodically repeat a command
cheat sheet · procps https://lab.dimsanych.ru/en/wiki/watch/Cheat sheet
-
watch -n1 -d 'command'every second, highlight changes -
watch cat /proc/mdstatprogress (RAID/jobs) -
watch 'ss -tlnp | grep :80'quotes for the pipeline! -
watch -g cmdexit when the output changes -
watch -c 'docker ps'with color
Options
Always quote a command that has a pipeline or a wildcard (|, *) —
otherwise the shell parses them before watch even runs, instead of the
repeated command doing so. By default watch strips ANSI color from the
output; -c turns it back on for commands that color their own text.