$| example in perl

Shell Programming and Scripting
1

Could anyone please let me know the meaning of $| and where it is being used?

Thanks in advance...

Regards,
J

2

A quick search gave me this: Perl Special Variables

Look for $OUTPUT_AUTOFLUSH or $|

3

You should have read perlvar documentation (using perldoc perlvar in most cases) before asking this question.

This is a special variable which controls the output buffering of the currently select ed output filehandle (which is STDOUT initially). Setting it to any true value (mostly 1 assigned to it) does buffer flush after any print , printf , or write on that handle. It normally means that you get to see output on that handle immediately, without (block) buffering coming into play.