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FAQs
Date and Time
How do I find the number of days between two dates?
What Week Is It ?
An overview of dates and times and how to handle them in Perl
Documentation
I am a complete beginner who knows nothing about perl, and nothing about programming, where do I start?
How do I get the information I need quickly from the perl documentation?
How do I find documentation about modules, and the modules themselves?
Where do I find the documentation for ActiveState (Windows) Perl?
How do I tell what version of a module is installed?
File I/O
How do I print the first line of a file?
How do I parse out part of a file from the middle of a file?
Can I make changes to a file without using a temporary file?
How do I get the size of a file in Perl?
How do I create a fixed width column file?
How do I read a file backwards?
How do I list the files in a directory?
Online References
Manipulating Text
How do I remove a newline from the end of a string?
How can I count the separator characters in a string?
How do I split a string and keep the characters I split on?
How can I access the individual characters in a string?
How can I run code that is in a string?
Found in /usr/local/lib/perl5/5.8.8/pod/perlfaq9.pod
Perl Variables
How do I initialize multiple variables in one statement?
How do I create an array from a string
How do I print a hash that has a hash within it?
How do I determine the length of something?
System and OS
How do I tell which operating system my perl program is running in?
How do I call a system or third party program from perl?
How do I set permissions on directories and files from Perl?
How do I write binary files on a non-Unix OS?
How can I print to a terminal in color?
Copying a directory and all it's contents
Regular Expressions
How do I use regular expressions to match numbers?
How do I assign a value to a variable and modify it with a regular expression, in one statement?
How do I build a regular expression that will match sentences where each word starts with a capital letter?
How do I match urls in a regular expression?
How do I match brackets or other meta-characters in a regular expression?
Perl Thinking
What does the -w mean?
How do I return multiple variables from a subroutine?
World Wide Web
How do I encode special characters into their HTML character entity representation?
How can I retreive the HTML for a URL and write it to a file?
How can I use Perl to test whether a WWW document is accessible?
Retrieving a list of file names from an ftp server
HOWTOs
HOWTOs
Using if, elsif, else and unless
Comparing values in perl
Understanding the foreach keyword
Perl has no switch statements. How do I avoid a long if-else-if pattern?
HERE documents
Variables and data structures
Perl arrays
Perl builtin functions
Using the Perl chomp() function
Using the Perl chop() function
Using the Perl index() function
Printing
Using the Perl push() function
Using the Perl qw() function
Using the Perl rand() function
Using the Perl rindex() function
Sorting
Using the Perl split() function
Using the Perl substr() function
Subroutines, methods and functions
How do I use subroutines from other perl files in my program?
Writing secure Perl code
How do I use taint mode?
Using Perl
Interpolation in Perl
Dereferencing in perl
Displaying a Text Message
Accepting user input
Determining length and size
Tutorials
Connect to a database
Sorting
Writing a CGI script
Writing a CGI form
Writing a CGI upload form
Retreiving web pages (LWP)
Using the HTML::Parser module
Parsing CSV
Writing a test harness
HTML::Tooltip::Javascript Talk
HTML::DragAndDrop Talk
Introduction to References
Perl Arrays - a tutorial
perlretut - Perl regular expressions tutorial
Misc
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