Which platform? On Unix you can (for example) do something like this
system q/xterm -e perl -le 'print "line $_" for 1..20; <>'/;
which would print 20 ines in a new xterm, and wait for you to press enter to close the terminal again. The -e option specifies the command to run in the xterm (some perl, here). Virtually any other terminal has similar facilities.
Is that what you are trying to do?
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