Returns the next character from the input file attached to FILEHANDLE, or the undefined value at end of file or if there was an error (in the latter case$! is set). If FILEHANDLE is omitted, reads from STDIN. This is not particularly efficient. However, it cannot be used by itself to fetch single characters without waiting for the user to hit enter. For that, try something more like:
if ($BSD_STYLE) { system "stty cbreak </dev/tty >/dev/tty 2>&1";}else { system "stty", '-icanon', 'eol', "\001";}my $key = getc(STDIN);if ($BSD_STYLE) { system "stty -cbreak </dev/tty >/dev/tty 2>&1";}else { system 'stty', 'icanon', 'eol', '^@'; # ASCII NUL}print "\n";Determination of whether$BSD_STYLE should be set is left as an exercise to the reader.
ThePOSIX::getattr function can do this more portably on systems purporting POSIX compliance. See also theTerm::ReadKey module on CPAN.
Perldoc Browser is maintained by Dan Book (DBOOK). Please contact him via theGitHub issue tracker oremail regarding any issues with the site itself, search, or rendering of documentation.
The Perl documentation is maintained by the Perl 5 Porters in the development of Perl. Please contact them via thePerl issue tracker, themailing list, orIRC to report any issues with the contents or format of the documentation.