Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked

Re: pipe perl

by VinsWorldcom (Parson)
on Oct 30, 2012 at 18:58 UTC ( #1001538=note: print w/replies, xml ) Need Help??

in reply to pipe perl

See open. Then try this:

open(my $old, '|-', "/bin/old"); select((select($old), $| = 1)[0]); foreach my $INPUT(@DATA) { my ($LAST_NAME,$FIRSTNAME,$ID_NUM,$BOOK) = split(/\s+/,$INPUT); print $old "$LAST_NAME\t$FIRSTNAME\n"; print $old "\t$ID_NUM\t$BOOK\n" }

Replies are listed 'Best First'.
Re^2: pipe perl
by kennethk (Abbot) on Oct 30, 2012 at 20:21 UTC
    A very important element for this solution (which goes unmentioned above) $| = 1. This turns off buffering on the output stream, or "sets the pipe to hot" (see perlvar). If you are having buffering issues, you can also close your file handle to clear the buffer.

    #11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1001538]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others contemplating the Monastery: (10)
As of 2017-02-21 22:02 GMT
Find Nodes?
    Voting Booth?
    Before electricity was invented, what was the Electric Eel called?

    Results (320 votes). Check out past polls.