close
Closes a filehandle, flushing any buffered output.
Closes the filehandle and releases its resources from the global
FILEHANDLE_TABLE. For in-memory filehandles (opened against a
scalar reference), the accumulated buffer is written back to the
target variable. For pipe filehandles, the child process’s stdin
is closed and waitpid is called; $? is set to the child’s
exit status.
Both lexical ($fh) and bareword (FH) filehandle forms are
supported. The standard handles STDIN/STDOUT/STDERR are
recognized by name.
Returns 1 on success, undef on failure.
Synopsis
close($fh) or die "Cannot close: $!";
close(FH);
Implementation Notes
perl5: pp_sys.c — close(FH) or close() (default STDOUT).