calling system inside or outside a method call can not affect is behaviour in any way.

Have you checked that you are calling the external program with the right arguments? try replacing the command by "echo" and see what is printed.

If everything else fails, try some process monitoring tool like (depending of your OS) truss, strace, ktrace, etc. (btw, make it monitor forked child processes).

Maybe the program you are calling is waiting for some input from stdin, maybe $param is undef...

In reply to Re^3: system() behaviour within object(class) instance by salva
in thread system() behaviour within object(class) instance by Robot

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