Check the values of $sensor for which the error occurs. Do they contain other bits of shell syntax such as ampersands, semicolons, or a trailing backslash? Any of those could cause the shell to misparse the remainder of the command.

Try instead: (obviously untested)

my $result = system(q[./upgrade.pl "].quotemeta($sensor).q["  >>worklo
+g 2>&1]);

[download]

In reply to Re: system() call mis-directs? by jcb
in thread system() call mis-directs? by Clarkman

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