tldr/pages/common/while.md

# while

> Simple shell loop.
> More information: <https://manned.org/while>.

- Read stdin and perform an action on every line:

`while read line; do echo "$line"; done`

- Execute a command forever once every second:

`while :; do {{command}}; sleep 1; done`
for/if/while: add 2016-01-05 18:47:12 +00:00			`# while`

Reformatted pages once more 2016-01-13 11:04:46 +00:00			`> Simple shell loop.`
brightness, n, open, pbcopy, pbpaste, rename, route, rubocop, softwareupdate, timed, where, while, xed, xip: add link (#7831) 2022-03-01 13:21:17 +00:00			`> More information: <https://manned.org/while>.`
for/if/while: add 2016-01-05 18:47:12 +00:00
multiple pages: format technical tokens (#5119) Co-authored-by: bl-ue <54780737+bl-ue@users.noreply.github.com> Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com> 2021-01-31 17:05:18 +00:00			`- Read stdin and perform an action on every line:`
for/if/while: add 2016-01-05 18:47:12 +00:00
			`while read line; do echo "$line"; done`

Reformatted pages once more 2016-01-13 11:04:46 +00:00			`- Execute a command forever once every second:`
for/if/while: add 2016-01-05 18:47:12 +00:00
			`while :; do {{command}}; sleep 1; done`