I would make the .pl file, look for a temp file. Something like clpdata.dat or something, and have perl write the entry to the temp file. Then, I would have it scan the process list for other...

The problem is, the method you use to read from the file handle, slurps the file, and then iterates over each line by replacing $line with $_. If you really want to prove this, you can throw the...

#!/usr/bin/perl

while ($uinput ne "quit") {
print "# "; $uinput = <>;

chomp($uinput);

if ($uinput eq "ls") {
open(LS, "ls -AF1 |");
...