NAME perldos – Perl under DOS, W31, W95. SYNOPSIS These are instructions for building Perl under DOS (or w??), using DJGPP v2.03 or later. Under w95 long filenames are supported. DESCRIPTION Before you start, you should glance through the README file found in the top-level directory where the Perl distribution was extracted. Make sure you…
NAME perldoc – Look up Perl documentation in Pod format. SYNOPSIS perldoc[-h][-D][-t][-u][-m][-l][-U][-F] [-i][-V][-T][-r] [-d destination_file] [-o formatname] [-M FormatterClassName] [-w formatteroption:value] [-n nroff – replacement] [-X] [-L language_code] PageName | ModuleName | ProgramName | URL Examples: perldoc -f BuiltinFunction perldoc -L it -f BuiltinFunction perldoc -q FAQ Keyword perldoc -L fr -q FAQ Keyword perldoc…
NAME perldl – Simple shell for PDL (see also pdl2) SYNOPSIS Use PDL interactively: bash$ perldl pdl> $a = sequence(10) # or any other perl or PDL command bash$ pdl pdl> print "Hello, world!\n"; Run a script: bash$ cat > pdlscript #!/usr/bin/pdl print "Hello, world!\n"; … DESCRIPTION The program perldl is a simple shell (written…
NAME perldiag – various Perl diagnostics DESCRIPTION These messages are classified as follows (listed in increasing order of desperation): (W) A warning (optional). (D) A deprecation (enabled by default). (S) A severe warning (enabled by default). (F) A fatal error (trappable). (P) An internal error you should never see (trappable). (X) A very fatal error…
NAME perldgux – Perl under DG/UX. SYNOPSIS One can read this document in the following formats: man perldgux view perl perldgux explorer perldgux.html info perldgux to list some (not all may be available simultaneously), or it may be read as is: as README.dgux. DESCRIPTION Perl 5.7/8.x for DG/UX ix86 R4.20MU0x BUILDING PERL ON DG/UX Non-threaded…
NAME perldeprecation – list Perl deprecations DESCRIPTION The purpose of this document is to document what has been deprecated in Perl, and by which version the deprecated feature will disappear, or, for already removed features, when it was removed. This document will try to discuss what alternatives for the deprecated features are available. The deprecated…
NAME perldelta – what is new for perl v5.30.0 DESCRIPTION This document describes differences between the 5.28.0 release and the 5.30.0 release. If you are upgrading from an earlier release such as 5.26.0, first read perl5280delta, which describes differences between 5.26.0 and 5.28.0. Notice sv_utf8_(downgrade|decode) are no longer marked as experimental. [perl #133788] <https://rt.perl.org/Ticket/Display.html?id=133788>. Core…
NAME perldebug – Perl debugging DESCRIPTION First of all, have you tried using "use strict;" and "use warnings;"? If you’re new to the Perl debugger, you may prefer to read perldebtut, which is a tutorial introduction to the debugger. If you’re looking for the nitty gritty details of how the debugger is implemented, you may…
NAME perldebtut – Perl debugging tutorial DESCRIPTION A (very) lightweight introduction in the use of the perl debugger, and a pointer to existing, deeper sources of information on the subject of debugging perl programs. There’s an extraordinary number of people out there who don’t appear to know anything about using the perl debugger, though they…
NAME perldebguts – Guts of Perl debugging DESCRIPTION This is not perldebug, which tells you how to use the debugger. This manpage describes low-level details concerning the debugger’s internals, which range from difficult to impossible to understand for anyone who isn’t incredibly intimate with Perl’s guts. Caveat lector. Debugger Internals Perl has special debugging hooks…
NAME perldbmfilter – Perl DBM Filters SYNOPSIS $db = tie % hash, ‘DBM’, … $old_filter = $db->filter_store_key(sub{…}); $old_filter = $db->filter_store_value(sub{…}); $old_filter = $db->filter_fetch_key(sub{…}); $old_filter = $db->filter_fetch_value(sub{…}); DESCRIPTION The four "filter_*" methods shown above are available in all the DBM modules that ship with Perl, namely DB_File, GDBM_File, NDBM_File, ODBM_File and SDBM_File. Each of the methods…
NAME perldata – Perl data types DESCRIPTION Variable names Perl has three built-in data types: scalars, arrays of scalars, and associative arrays of scalars, known as “hashes”. A scalar is a single string (of any size, limited only by the available memory), number, or a reference to something (which will be discussed in perlref). Normal…
NAME perlcygwin – Perl for Cygwin SYNOPSIS This document will help you configure, make, test and install Perl on Cygwin. This document also describes features of Cygwin that will affect how Perl behaves at runtime. NOTE: There are pre-built Perl packages available for Cygwin and a version of Perl is provided in the normal Cygwin…
NAME "perlcritic" – Command-line interface to critique Perl source. SYNOPSIS perlcritic[-12345 | –brutal | –cruel | –harsh | –stern | –gentle] [–severity number | name][{-p | –profile} file | –noprofile] [–top[number]][–theme expression][–include pattern] [–exclude pattern][{-s | –single – policy} pattern] [–only | –noonly][–profile – strictness{warn | fatal | quiet}] [–force | –noforce][–statistics][–statistics – only] [–count…
NAME perlcompile – Introduction to the Perl Compiler-Translator DESCRIPTION Perl has always had a compiler: your source is compiled into an internal form (a parse tree) which is then optimized before being run. Since version 5.005, Perl has shipped with a module capable of inspecting the optimized parse tree ("B"), and this has been used…
NAME perlcommunity – a brief overview of the Perl community DESCRIPTION This document aims to provide an overview of the vast perl community, which is far too large and diverse to provide a detailed listing. If any specific niche has been forgotten, it is not meant as an insult but an omission for the sake…
NAME perlclib – Internal replacements for standard C library functions DESCRIPTION One thing Perl porters should note is that perl doesn’t tend to use that much of the C standard library internally; you’ll see very little use of, for example, the ctype.h functions in there. This is because Perl tends to reimplement or abstract standard…
NAME perlcheat – Perl 5 Cheat Sheet DESCRIPTION This ‘cheat sheet’ is a handy reference, meant for beginning Perl programmers. Not everything is mentioned, but 195 features may already be overwhelming. The sheet CONTEXTS SIGILS ref ARRAYS HASHES void $scalar SCALAR @array % hash scalar @array ARRAY @array[0, 2] @hash{‘a’, ‘b’} list % hash HASH…
NAME perlce – Perl for WinCE Building Perl for WinCE WARNING Much of this document has become very out of date and needs updating, rewriting or deleting. The build process was overhauled during the 5.19 development track and the current instructions as of that time are given in “CURRENT BUILD INSTRUCTIONS”; the previous build instructions,…
NAME perlcall – Perl calling conventions from C DESCRIPTION The purpose of this document is to show you how to call Perl subroutines directly from C, i.e., how to write callbacks. Apart from discussing the C interface provided by Perl for writing callbacks the document uses a series of examples to show how the interface…