S<[ B<-i>[I<extension>] ]>
S<[ [B<-e>|B<-E>] I<'command'> ] [ B<--> ] [ I<programfile> ] [ I<argument> ]...>
+For more information on these options, you can run C<perldoc perlrun>.
+
=head1 GETTING HELP
The F<perldoc> program gives you access to all the documentation that comes
For ease of access, the Perl manual has been split up into several sections.
+=begin buildtoc
+
+# This section is parsed by Porting/pod_lib.pl for use by pod/buildtoc etc
+
+flag =g perluniprops perlmodlib perlapi perlintern
+flag =go perltoc
+flag =ro perlcn perljp perlko perltw
+flag = perlvms
+
+path perlfaq.* cpan/perlfaq/lib/
+path perlglossary cpan/perlfaq/lib/
+path perlxs(?:tut|typemap)? dist/ExtUtils-ParseXS/lib/
+path perldoc cpan/Pod-Perldoc/lib/
+
+aux a2p c2ph h2ph h2xs perlbug pl2pm pod2html pod2man s2p splain xsubpp
+
+=end buildtoc
+
=head2 Overview
perl Perl overview (this section)
perlintro Perl introduction for beginners
+ perlrun Perl execution and options
perltoc Perl documentation table of contents
=head2 Tutorials
perlpod Perl plain old documentation
perlpodspec Perl plain old documentation format specification
perlpodstyle Perl POD style guide
- perlrun Perl execution and options
perldiag Perl diagnostic messages
perllexwarn Perl warnings and their control
perldebug Perl debugging
perluniintro Perl Unicode introduction
perlunicode Perl Unicode support
perlunifaq Perl Unicode FAQ
- perluniprops Index of Unicode Version 6.0.0 properties in Perl
+ perluniprops Index of Unicode properties in Perl
perlunitut Perl Unicode tutorial
perlebcdic Considerations for running Perl on EBCDIC platforms
perldebguts Perl debugging guts and tips
perlxstut Perl XS tutorial
perlxs Perl XS application programming interface
+ perlxstypemap Perl XS C/Perl type conversion tools
perlclib Internal replacements for standard C library functions
perlguts Perl internal functions for those doing extensions
perlcall Perl calling conventions from C
perlbook Perl book information
perlcommunity Perl community information
- perltodo Perl things to do
perldoc Look up Perl documentation in Pod format
perlhist Perl history records
perldelta Perl changes since previous version
- perl5154delta Perl changes in version 5.15.4
- perl5153delta Perl changes in version 5.15.3
- perl5152delta Perl changes in version 5.15.2
- perl5151delta Perl changes in version 5.15.1
- perl5150delta Perl changes in version 5.15.0
+ perl5176delta Perl changes in version 5.17.6
+ perl5175delta Perl changes in version 5.17.5
+ perl5174delta Perl changes in version 5.17.4
+ perl5173delta Perl changes in version 5.17.3
+ perl5172delta Perl changes in version 5.17.2
+ perl5171delta Perl changes in version 5.17.1
+ perl5170delta Perl changes in version 5.17.0
+ perl5161delta Perl changes in version 5.16.1
+ perl5162delta Perl changes in version 5.16.2
+ perl5160delta Perl changes in version 5.16.0
+ perl5143delta Perl changes in version 5.14.3
perl5142delta Perl changes in version 5.14.2
perl5141delta Perl changes in version 5.14.1
perl5140delta Perl changes in version 5.14.0
+ perl5125delta Perl changes in version 5.12.5
perl5124delta Perl changes in version 5.12.4
perl5123delta Perl changes in version 5.12.3
perl5122delta Perl changes in version 5.12.2
=head2 Language-Specific
+=for buildtoc flag +r
+
perlcn Perl for Simplified Chinese (in EUC-CN)
perljp Perl for Japanese (in EUC-JP)
perlko Perl for Korean (in EUC-KR)
perlaix Perl notes for AIX
perlamiga Perl notes for AmigaOS
- perlbeos Perl notes for BeOS
perlbs2000 Perl notes for POSIX-BC BS2000
perlce Perl notes for WinCE
perlcygwin Perl notes for Cygwin
perldgux Perl notes for DG/UX
perldos Perl notes for DOS
- perlepoc Perl notes for EPOC
perlfreebsd Perl notes for FreeBSD
perlhaiku Perl notes for Haiku
perlhpux Perl notes for HP-UX
perllinux Perl notes for Linux
perlmacos Perl notes for Mac OS (Classic)
perlmacosx Perl notes for Mac OS X
- perlmpeix Perl notes for MPE/iX
perlnetware Perl notes for NetWare
perlopenbsd Perl notes for OpenBSD
perlos2 Perl notes for OS/2
perlsolaris Perl notes for Solaris
perlsymbian Perl notes for Symbian
perltru64 Perl notes for Tru64
- perluts Perl notes for UTS
- perlvmesa Perl notes for VM/ESA
perlvms Perl notes for VMS
perlvos Perl notes for Stratus VOS
perlwin32 Perl notes for Windows
+=for buildtoc flag -r
+
=head2 Stubs for Deleted Documents
perlboot
perlbot
+ perltodo
perltooc
perltoot
+=for buildtoc __END__
On a Unix-like system, these documentation files will usually also be
available as manpages for use with the F<man> program.
In general, if something strange has gone wrong with your program and you're
-not sure where you should look for help, try the B<-w> switch first. It will
-often point out exactly where the trouble is.
+not sure where you should look for help, try making your code comply with
+B<use strict> and B<use warnings>. These will often point out exactly
+where the trouble is.
=head1 DESCRIPTION
embeddable and extensible
-Described in L<perlembed>, L<perlxstut>, L<perlxs>, L<perlcall>,
-L<perlguts>, and L<xsubpp>.
+Described in L<perlembed>, L<perlxstut>, L<perlxs>, L<perlxstypemap>,
+L<perlcall>, L<perlguts>, and L<xsubpp>.
=item *
=head1 DIAGNOSTICS
-The C<use warnings> pragma (and the B<-w> switch) produces some
-lovely diagnostics.
+Using the C<use strict> pragma ensures that all variables are properly
+declared and prevents other misuses of legacy Perl features.
+
+The C<use warnings> pragma produces some lovely diagnostics. One can
+also use the B<-w> flag, but its use is normally discouraged, because
+it gets applied to all executed Perl code, including that not under
+your control.
See L<perldiag> for explanations of all Perl's diagnostics. The C<use
diagnostics> pragma automatically turns Perl's normally terse warnings
Setuid scripts have additional constraints that can produce error
messages such as "Insecure dependency". See L<perlsec>.
-Did we mention that you should definitely consider using the B<-w>
-switch?
+Did we mention that you should definitely consider using the B<use warnings>
+pragma?
=head1 BUGS
-The B<-w> switch is not mandatory.
+The behavior implied by the B<use warnings> pragma is not mandatory.
Perl is at the mercy of your machine's definitions of various
operations such as type casting, atof(), and floating-point
https://perl5.git.perl.org / perl5.git / blobdiff