Query.

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Migrated from rt.perl.org#1989 (status was 'resolved')

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[p5pRT]

From manoj@nortelnetworks.com

I have a query on Perl I/O I am using in my scipt and I would highly appreciate if you could
help me out with this.

Program

---

$file="output";
open(FL,">>$file");

while (<>)
{
  print FL $_;
}

close(FL);

---

The above program "read.pl " takes input from STDIN and writes to a file "output".

QUERY : But the write takes place only after the loop is exited and the file is closed.

Is there a way where we can flush the buffer and have it written in the while loop itself.
I looked for a flush function but could not find one.

Any suggestions ?

Thanks in advance,

Manoj

[p5pRT]

From @tamias

On Fri, Jan 14, 2000 at 06​:31​:15PM -0500, Manoj Raghavan wrote​:

Is there a way where we can flush the buffer and have it written in the
while loop itself. I looked for a flush function but could not find one.

This is explained in Perl's FAQ. perlfaq5​:

How do I flush/unbuffer an output filehandle? Why must I do this?

Ronald