comment on

open(STDOUT, "/dev/null");          # suppressing output  
open(STDERR, "/dev/null");          # suppressing output
[download]

Yes, this suppresses output, but accidentally. You open STDOUT and STDERR for input. That may confuse your child process. What you really want is the three-argument form of open, used for output:

open STDOUT,'>','/dev/null';
open STDERR,'>','/dev/null';
[download]

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^3: How do you launch a background process and get pid? by afoken
in thread How do you launch a background process and get pid? by bt101

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