bash oneliner to clear out apache httpd semaphores

If your seeing the following error message in your apache error logs

[emerg] (28)No space left on device: Couldn't create accept lock

You probably need to clear out some stale httpd semaphores. The following oneliner will do that for you.

ipcs -s | grep apache | perl -e 'while () { @a=split(/\s+/); print `ipcrm sem $a[1]`}'