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Perl-regex

18 posts

Perl - Extracting Date from a String using Regex

Last Updated: 14 December 2020

In Perl generally, we have to read CSV (Comma Separated Values) files to extract the required data. Sometimes there are dates in the file name like sample 2014-02-12T11:10...read more

Technical Scripter

Technical Scripter 2020

Perl - Use of Capturing in Regular Expressions

Last Updated: 01 August 2020

A regular expression or a regex is a string of characters that define the pattern that we are viewing. It is a special string describing a search pattern present inside a ...read more

Perl | Greedy and non-greedy match

Last Updated: 29 December 2019

Regular Expressions(Regex/RE) is a sequence of characters that are used for pattern matching. Or we can say that it is a way of describing a set of strings without having ...read more

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Perl | Extract IP Address from a String using Regex

Last Updated: 26 September 2019

Perl stands for Practical Extraction and Reporting Language and this not authorized acronym. One of the most powerful features of the Perl programming language is Regular ...read more

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Perl | Assertions in Regex

Last Updated: 09 September 2019

Regular Expression (Regex or RE) in Perl is when a special string describing a sequence or the search pattern in the given string. An Assertion in Regular Expression is wh...read more

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Perl | Anchors in Regex

Last Updated: 06 January 2023

Anchors in Perl Regex do not match any character at all. Instead, they match a particular position as before, after, or between the characters. These are used to check not...read more

Perl | Grouping and Alternation in Regex

Last Updated: 03 February 2022

Regex or Regular Expressions are an important part of Perl Programming. It is used for searching the specified text pattern. In this, set of characters together form the s...read more

Perl | Backtracking in Regular Expression

Last Updated: 03 July 2019

In Perl, a Regular expression(a.k.a regexes or regexps or REs) is a way of describing a set of strings without having to list all strings in your program or simply we can ...read more

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Perl | 'ee' Modifier in Regex

Last Updated: 07 June 2019

In Perl, the regular expression allows performing various operations on a given string with the use of suitable operators. These operators can perform operations like modi...read more

Perl | 'e' modifier in Regular Expression

Last Updated: 07 June 2019

In Perl, the regular expression allows performing various operations on a given string with the use of suitable operators. These operators can perform operations like modi...read more

Perl | Quantifiers in Regular Expression

Last Updated: 12 June 2019

Perl provides several numbers of regular expression quantifiers which are used to specify how many times a given character can be repeated before matching is done. This is...read more

Perl | pos() function in Regular Expression

Last Updated: 16 June 2021

pos() function in Perl is used to return the position of the last match using the 'm' modifier in Regex.pos function can be used with the character classes in Regex to ret...read more

Perl | Operators in Regular Expression

Last Updated: 22 February 2023

Prerequisite: Perl | Regular Expressions The Regular Expression is a string which is the combination of different characters that provides matching of the text strings. A ...read more

Perl | grep() Function

Last Updated: 20 June 2022

The grep() function in Perl used to extract any element from the given array which evaluates the true value for the given regular expression.Syntax: grep(Expression, @Arra...read more

Perl-Array-Functions

Perl | Regex Cheat Sheet

Last Updated: 31 July 2019

Regex or Regular Expressions are an important part of Perl Programming. It is used for searching the specified text pattern. In this, set of characters together form the s...read more