"UPDATE moved misplaced paren"

You've removed what you originally posted so I don't know what you were attempting to fix (see "How do I change/delete my post?"). Regardless, what you now have is still not correct (I assume you didn't intend or die $! to be part of the shell command).

See the examples in the system documentation for syntax and how to check for errors. You may also find the autodie pragma of interest.

If you are unable to test your posted solutions, please clearly indicate this.

Also, what you've shown as corrections later in this thread are also wrong (for the same reason). [Update (Clarification of "later in this thread"): I'm referring to "Re^4: retrieve the value of a system call in a non blocking mode" which is later than the post I'm replying to but appears physically earlier on this page.]