Linux Manuals

perldsc – Perl Data Structures Cookbook DescriptionPerl lets us have complex data structures. You can write something like this and all of a sudden, you’d have an array with three dimensions! for my $x (1 .. 10) { for my $y (1 .. 10) { for my $z (1 .. 10) { $AoA[$x][$y][$z] = $x…

perldos – Perl under DOS, W31, W95. SynopsisThese are instructions for building Perl under DOS (or w??), using DJGPP v2.03 or later. Under w95 long filenames are supported. DescriptionBefore you start, you should glance through the README file found in the top-level directory where the Perl distribution was extracted. Make sure you read and understand…

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|URLExamples: perldoc -f BuiltinFunction perldoc -L it -f BuiltinFunction perldoc -q FAQ Keyword perldoc -L fr -q FAQ Keyword…

perldl – Simple shell for PDL (see also pdl2) SynopsisUse 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"; …DescriptionThe program perldl is a simple shell (written in perl) for interactive use…

perldiag – various Perl diagnostics DescriptionThese 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 (nontrappable). (A)…

perldgux – Perl under DG/UX. SynopsisOne can read this document in the following formats: man perldgux view perl perldgux explorer perldgux.html info perldguxto list some (not all may be available simultaneously), or it may be read as is: as README.dgux. DescriptionPerl 5.7/8.x for DG/UX ix86 R4.20MU0x Building Perl On Dg/UxNon-threaded Perl on DG/UXJust run ./Configure…

perldeprecation – list Perl deprecations DescriptionThe 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 features will…

perldelta – what is new for perl v5.30.0 DescriptionThis 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. Noticesv_utf8_(downgrade|decode) are no longer marked as experimental. [perl #133788] <https://rt.perl.org/Ticket/Display.html?id=133788>. Core EnhancementsLimited variable length…

perldebug – Perl debugging DescriptionFirst 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 prefer to…

perldebtut – Perl debugging tutorial DescriptionA (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 use the…

perldebguts – Guts of Perl debugging DescriptionThis 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 InternalsPerl has special debugging hooks at compile-time and…

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 { … } );DescriptionThe four "filter_*" methods shown above are available in all…

perldata – Perl data types DescriptionVariable namesPerl 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 arrays are ordered…

perlcygwin – Perl for Cygwin SynopsisThis 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 install. If…

"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]…

perlcompile – Introduction to the Perl Compiler-Translator DescriptionPerl 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 to write…

perlcommunity – a brief overview of the Perl community DescriptionThis 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 of brevity….

perlclib – Internal replacements for standard C library functions DescriptionOne 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 library functions,…

perlcheat – Perl 5 Cheat Sheet DescriptionThis ‘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 $array[0] $hash{‘a’} &sub CODE…

perlce – Perl for WinCE Building Perl for WinCEWARNINGMuch 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, which are largely…