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Sometimes it's useful to let Perl tell you what it thinks about the code you give it to execute (e.g., "where does the fourth lineread come from?"):

>perl -MO=Deparse -ne "$s=<>;<>;<>;chomp($s);print length($s).\"\n\"; " LINE: while (defined($_ = <ARGV>)) { $s = <ARGV>; <ARGV>; <ARGV>; chomp $s; print length($s) . "\n"; } -e syntax OK

Use  -MO=Deparse,-p   for even gorier details. See B::Deparse and O.


In reply to Re: command line perl reading from STDIN by AnomalousMonk
in thread command line perl reading from STDIN by perlhappy

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