Note that when you use split, your variable will have a space at the end. You can find that by printing the values:

print "[$pagal]\n";

[download]

In the case that does not work, you will find that there is the additional space from $run_cmd.

Personally, I would restructure the code so that the log file is in a separate variable from the start:

my $logfile = '/tmp/some/logfile.txt';

my $run_cmd = "... >$logfile";
...
open my $log, '<', $logfile
    or die "Couldn't open log file '$logfile': $!";

[download]

In reply to Re: open file error by Corion
in thread open file error by t-rex

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