Linux - ipcs

http://www.thegeekstuff.com/2010/08/ipcs-command-examples/

How to clean up share memory segments?

If you frequently restart your Apache sandbox in single process mode, occassionally you may get an error "…". Here is how I clean up share memory segments:

ipcs -s | gawk '{ print $2 }' | grep -P '\d' | xargs -n 1 ipcrm -s
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