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This is a development version of Perl. </div> <dl> <dt id="HANDLE->autoflush(-EXPR-)"><a class="permalink" href="#HANDLE-%3Eautoflush(-EXPR-)">#</a><a id="HANDLE"></a><a id="HANDLE-autoflush-EXPR"></a>HANDLE->autoflush( EXPR )</dt> <dd> </dd> <dt id="$OUTPUT_AUTOFLUSH"><a class="permalink" href="#$OUTPUT_AUTOFLUSH">#</a><a id="OUTPUT_AUTOFLUSH"></a>$OUTPUT_AUTOFLUSH</dt> <dd> </dd> <dt id="$|"><a class="permalink" href="#$%7C">#</a><a id="pod"></a>$| </dt> <dd> <p>If set to nonzero, forces a flush right away and after every write or print on the currently selected output channel. Default is 0 (regardless of whether the channel is really buffered by the system or not; <code>$|</code> tells you only whether you've asked Perl explicitly to flush after each write). STDOUT will typically be line buffered if output is to the terminal and block buffered otherwise. Setting this variable is useful primarily when you are outputting to a pipe or socket, such as when you are running a Perl program under <b>rsh</b> and want to see the output as it's happening. This has no effect on input buffering. See <a href="/5.41.3/perlfunc#getc">"getc" in perlfunc</a> for that. See <a href="/5.41.3/perlfunc#select">"select" in perlfunc</a> on how to select the output channel. See also <a href="/5.41.3/IO::Handle">IO::Handle</a>.</p> <p>Mnemonic: when you want your pipes to be piping hot.</p> </dd> </dl> </div> <div id="footer"> <p>Perldoc Browser is maintained by Dan Book (<a href="https://metacpan.org/author/DBOOK">DBOOK</a>). Please contact him via the <a href="https://github.com/Grinnz/perldoc-browser/issues">GitHub issue tracker</a> or <a href="mailto:dbook@cpan.org">email</a> regarding any issues with the site itself, search, or rendering of documentation.</p> <p>The Perl documentation is maintained by the Perl 5 Porters in the development of Perl. 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