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bash function to check for something every 5 seconds

Terminal - bash function to check for something every 5 seconds
watch -n <seconds> <command>
2009-09-04 15:19:42
User: aonick
Functions: watch
-2
bash function to check for something every 5 seconds

Every seconds do

Alternatives

There are 6 alternatives - vote for the best!

Terminal - Alternatives
function checkfor () { while :; do $*; sleep 5; done; }
2009-09-03 19:35:42
User: relay
Functions: sleep
Tags: bash
1

checkfor: have the shell check anything you're waiting for.

'while : ; do' is an infinite loop

'$*' executes the command passed in

'sleep 5' - change for your tastes, sleep for 5 seconds

bash, ksh, likely sh, maybe zsh

Ctrl-c to break the loop

Know a better way?

If you can do better, submit your command here.

What others think

watch is not part of bash, it is a program that in debian/ubuntu comes with the 'procps' package. Bash can tell you if certain commands are builtin. Run this from within bash:

type watch watch is /usr/bin/watch

or this:

type type type is a shell builtin
Comment by bwoodacre 298 weeks and 2 days ago

Your point of view

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