Unix Programming Books
Perl (Practical Extraction and Report Language) is a programming language designed by Larry Wall that properties of C and UNIX scripting languages ??such as sh, sed and awk to unite. Perl is designed to replace traditional unix programming books shell scripts, which is in sh (Bourne shell) written while many other utilities calls such as sed, tr, uniq, sort, expr and AWK, while everything is covered before a C program had to be written. It not only combines the capabilities of these languages ??but also a large part of their ways of expression (syntax). The reason it is called the Swiss army knife of unix programming books languages ??(the Swiss Army Knife of unix programming books languages) called. To just the facts heading "Did you know . . " # print should be moved from one line to the line with print_wist_je_dat & print $ html; defining print_wist_je_dat can look like this:. Perl is very widely used non-alphanumeric symbols with a predefined meaning like, $ _ and $ / and the special characters in regular expressions. Also, braces and brackets used for many different things. Moreover, many operations a default operator may be omitted. These features are compact code, but hamper the readability for those who do not yet know the notations. Another feature is that the syntax of Perl is very flexible, Larry Wall, this has generally stated motto: There's More Than One Way to do it. An example of the same four ways to write. Many programmers argue that this leads to more difficult readable code by programmers develop their own writing style and to get used to the style of another. It should also be noted that a language like Perl for many tasks much more expensive than a low-level language like C, there is simply much more per line, so it's no wonder that more effort to understand each line. Larry Wall was from 1995 to 2003 working for the publisher O'Reilly, who has spent some very popular Perlboeken. The animal on the cover of the O'Reilly books, the book also immediately a nickname, such as the Camel Book for Programming Perl. Beginning Perl - not O'Reilly - for beginners and gives a thorough introduction to the high rates of substance Llama, Alpaca and Camel works. Another book that can be learned Perl is Perl for Dummies by Paul Hoffman (published by Addison Wesley, ISBN 90-430-0433-2). ActivePerl is included on CD. Perl was created as a reporting tool: a program that retrieves information from text files and presented in report form. Larry Wall posted version 1. 0 in 1987 newsgroup comp. sources. misc. This could occur CPAN, the central repository of freely reusable Perl libraries. New functionality was no longer added to the language, but CPAN module available. Perl became very popular as "glue" language for systems together. Since the advent of the World Wide Web to late nineties was the main language for Web applications. PHP later became popular. In 2000, the next version of Perl, version 6, started. This will include better (static) typing possible. Version 5 will be occasional maintenance releases with minor improvements. In 5. 10 even added some features from Perl 6 [1] that must be explicitly enabled in order not to break backward compatibility. [2]. ActionScript · Ada · ALGOL · APL · AWK · Assembler · basic ° C ° C + + × C # deg COBOL · D · Eiffel × F # deg Fortran · Haskell · J # · Java · JavaScript · Lisp · logo · ml · Modula-2 · Oberon · Object Pascal · Ocaml · · Pascal Perl PHP · · PL / I · · Prolog Python Ruby · · Scheme Simula · · Small Talk · Visual Basic. . . .
