$| ->Unclear statement

[George]

I am not able to understand what does $| means or do in perl
thanks
Gk
--

 

[Tassilo v. Parseval]

Also sprach George:

I am not able to understand what does $| means or do in perl

It's one of Perl's special predefined variables. Each of these is
documented in perlvar.pod (accessible from the command-line with
'perldoc perlvar'). Seek to "$OUTPUT_AUTOFLUSH" to learn more about it.

If you have difficulties understanding this particular paragraph of the
perldocs, feel free to post a follow-up question.

Tassilo