Piped opening from command line?

[p5pRT]

Migrated from rt.perl.org#24519 (status was 'resolved')

Searchable as RT24519$

[p5pRT]

From silume@earthlink.net

Is there a way to read files given on the commandline which begin or end
with '|' (pipe) using <>, -p, or -n? It doesn't seem to be possible.
It seems strange that perl would trust the user to open arbitrary pipes.

--
Leah

[p5pRT]

From japhy@pobox.com

On Nov 18, Leah said​:

Is there a way to read files given on the commandline which begin or end
with '|' (pipe) using <>, -p, or -n? It doesn't seem to be possible.
It seems strange that perl would trust the user to open arbitrary pipes.

It works for me​:

  perl -lne 'print scalar reverse' -- 'date |'

--
Jeff "japhy" Pinyan japhy@​pobox.com http​://www.pobox.com/~japhy/
RPI Acacia brother #734 http​://www.perlmonks.org/ http​://www.cpan.org/
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
[ I'm looking for programming work. If you like my work, let me know. ]

[p5pRT]

From nick.ing-simmons@elixent.com

Leah <perl5-porters@​perl.org> writes​:

# New Ticket Created by Leah
# Please include the string​: [perl #24519]
# in the subject line of all future correspondence about this issue.
# <URL​: http​://rt.perl.org/rt2/Ticket/Display.html?id=24519 >

Is there a way to read files given on the commandline which begin or end
with '|' (pipe) using <>, -p, or -n? It doesn't seem to be possible.

You can use the 3-arg form of open​:

open(my $fh,'<',$ARGV[$N]);

or sysopen

use Fcntl;
sysopen(my $fh,$ARGV[N],O_RDONLY);

both avoid the magic.

It seems strange that perl would trust the user to open arbitrary pipes.

[p5pRT]

@iabyn - Status changed from 'open' to 'resolved'