Hi all, I need help/ideas on how to do this. I have this command in my perl script where I call this external program. 
$tcl = 'load $gdsfile; $command1; $command2; etc ...';

$output = `abctool -shell $tcl`;

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I found out that I need to generate some extra commands on the run while running the tcl code. Is there anyway I can execute the 'load $gdsfile' section and keep the program running? I do not want to rerun the whole command again since the 'load $gdsfile' code takes 1 hour to run. thanks

In reply to executing external program question by echoangel911

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