Hi,

I'm baffled, but maybe I need a second pair of glasses on top of the first one... What is the difference between: 

my @qrsh_options = split / /, $qrsh_options;
system 'qrsh', @qrsh_options, 'lens', '-n', "\"source $qscript; 
test_model $arguments\"", ">$output_file", "2>$logfile";

[download]
and system "qrsh $qrsh_options lens -n \"source $qscript; test_model $arguments\" >$output_file 2>$logfile";

The first works, the second causes an error (a Tcl error - the part between the \"...\" is Tcl, which is the internal script language used by lens, but which I don't know well, so I still write my wrappers in Perl). As far as I can see, the error must be due to a difference between the two variants of the system call, but I don't see where. I want to use capture_exec from IO::CaptureOutput instead of system, but I need the 2nd kind of syntax for that, and I can't get it right :-/

In reply to Syntax details with "system" by Anonymous Monk

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