change the single-quoted string for a double-quoted one, change $[node] to ${node}, escape those double quotes within the string, and beware of the quotes in general with respect to what actually gets passed to the shell. 

system ("wrunprb \"*\" \"*\" \"*\" ${node}");

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In reply to Re: using variable inside system call by pbeckingham
in thread using variable inside system call by natty_dread

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