If the purpose is to do it fast, why the sleep? Anyways, the following lines of your code:
foreach $arg (@ARGV) { $string = $string . "+" . "$arg" } # parsing ha
+ck
$string =~ s/^\+//g; # hack to hack the parsing hack
..are better and more succintly put as merely
$string = join '+', @ARGV
perl -pe '"I lo*`+$^X$\"$]!$/"=~m%(.*)%s;$_=$1;y^+*`^ ve^#$&V"+@( NO CARRIER'
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