Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask

Re: termination of system command

by tcf03 (Deacon)
on Feb 11, 2008 at 16:27 UTC ( [id://667411] : note . print w/replies, xml ) Need Help??

in reply to termination of system command

This does not answer your question directly, but why reinvent a wheel here? vmstat will stop itself using it like vmstat delay count. Using the following vmstat will stop collecting after 10 iterations at 10 second intervals.
@val = `vmstat 10 10`;

update - system or IPC::Run3 may serve you better.

"That which we persist in doing becomes easier, not that the task itself has become easier, but that our ability to perform it has improved."
  --Ralph Waldo Emerson