Perl Interview Questions and Answers

Last updated on Feb 06, 2023
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Perl Interview Questions

Perl is an open source programming language generally developed for text manipulation, or we could say text editing. It is currently widely used for the task like web development, system administration, GUI development, network programming and more. Officially Perl does not have an acronym, but in backronyms people used it as Practical Extraction and Report Language. Are you for looking for Perl interview questions? As a Perl developer, you would want to know the best possible Perl interview questions and answers for freshers and experienced that you might be asked in your job Interview.


  • Perl is easy to understand
  • Versatile and mature programming language.
  • Perl is low cost as it available on MS-DOS , Windows NT, OS/2 etc.
  • Its multipurpose language nature makes its work on Imperative, Procedural, Functional or Object Oriented, depends upon need.

Most Frequently Asked Perl Interview Questions

Here in this article, we will be listing frequently asked Perl Interview Questions and Answers with the belief that they will be helpful for you to gain higher marks. Also, to let you know that this article has been written under the guidance of industry professionals and covered all the current competencies.

Q21. What is the grep function also write the syntax of it?

The grep function is used as a filter an array list that runs a regular expression and returns true and evaluated element.

Syntax @List = grep(Expression, @array).

Q22. What are the types of operator Perl have ?
  • Arithmetic operators, +, - ,* etc
  • Assignment operators: += , -+, *= etc
  • Increment/ decrement operators: ++, --
  • String concatenation: ‘.’ operator
  • comparison operators: ==, !=, >, < , >= etc
  • Logical operators: &&, ||
Q23. How to add two arrays together ?

@sumarray = (@arr1,@arr2);

Q24. How will you remove the duplicate data from @array=("perl", "php”, "per", "asp")?

sub uniqueString {
return keys %{{ map { $_ => 1 } @_ }};
@array = ("perl", "php”, "per", "asp");
print join(" ", @array), "\n";
print join(" ", uniqueString(@array)), "\n";


Q25. What is the use of the ’$_’ symbol?

$ is default input and pattern matching space variable in Perl.

Development History

Perl is developed by Larry Wall in 1987 and we currently we are using 5.28.1.

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