Shulou(Shulou.com)06/02 Report--

This article mainly introduces what the Perl language is, the article is very detailed, has a certain reference value, interested friends must read it!

Overview of Perl language

What is the Perl language?

The Perl language is an acronym for PracticalExtractionandReportLanguage. It is designed by LarryWall and constantly updated and maintained by him for programming in the UNIX environment.

The ◆ Perl language has the power and flexibility of high-level languages such as C #. In fact, you will see that many of its features are borrowed from the C language.

◆ is like scripting languages, Perl languages don't need compilers and linkers to run code, all you have to do is write the program and tell the Perl language to run it. This means that the Perl language is ideal for quick solutions to small programming problems and for prototyping large events to test potential solutions.

The ◆ Perl language provides all the features of scripting languages such as sed and awk, as well as many features that they do not have. The Perl language also supports sed to Perl and awd to Perl translators.

In short, the Perl language is as powerful as C and as convenient as scripting languages such as awk and sed.

Where is the Perl language?

The Perl language is usually located in the / usr/local/bin/Perl or / usr/bin/Perl languages. You can get it for free on Internet using anonymous FTP, such as the ftp://prep.ai.mit.edu/pub/gnu/Perl language-5.004.tar.gz.

The installation process is:

(1) decompress:

$gunzipPerl language-5.004.tar.gz

$tarxvfPerl language-5.004.tar.gz

(2) configuration:

$Configure

(3) compile:

$make

$maketest

$makeinstall

(4) place:

Copy the compiled executable to the directory where the executable is usually located, such as:

$copy/usr/local/bin/Perl language

Note: this requires system administrator privileges.

III. Operation

Edit your Perl program with a text editor and add the executable attribute: $chmod+x and you can execute it: $. /. If the system prompts: "/ usr/local/bin/Perl language notfound", then you did not install successfully, please reinstall.

Note: the * * line of your program must be #! / usr/local/bin/Perl language (where the Perl language is located).

IV. Notes:

Comments are made by using the character # at the beginning of the statement, such as:

# thislineisacomment

Note: it is recommended that you often use comments to make your program easy to read, which is a good programming habit.

The above is all the content of this article "what is the Perl language?" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.