Perl Scripting Interview Question and Answers
Perl Scripting Interview Question and Answers: Perl scripting is a programming language used for developing a wide range of applications, including system administration, web development, and network programming. It is a flexible and powerful language that allows developers to create complex programs with ease.
Perl Scripting Interview Question and Answers: Perl’s syntax is designed to be simple and expressive, making it easy for developers to write code quickly and efficiently. It has a vast library of modules and tools that enable developers to perform various tasks such as regular expressions, file input/output operations, and database connectivity. Perl is widely used for automating tasks, parsing text, and manipulating data. Its versatility makes it an excellent choice for various scripting tasks, from small scripts to large-scale enterprise applications, Here we are Providing Important Perl Scripting Interview Question and Answers.
Question 1 : What is Perl?
Answer: Perl is a high-level, interpreted programming language that is commonly used for scripting and automation tasks.
Question 2: What is the difference between Perl 5 and Perl 6?
Answer: Perl 5 is the older version of the language, while Perl 6 is a newer, more modern version. Perl 6 was developed to address some of the shortcomings of Perl 5, such as a lack of native support for threads and better support for object-oriented programming.
Question 3: What is the syntax for declaring a variable in Perl?
Answer: Variables in Perl are declared using the “$” symbol. For example, to declare a variable called “name”, you would write “$name”.
Question 4: What is the difference between “my” and “our” in Perl?
Answer: “my” is used to declare a variable within the current scope, while “our” is used to declare a variable that is shared between multiple packages.
Question 5: What is a regular expression in Perl?
Answer: A regular expression is a pattern of characters that is used to match and manipulate text in Perl. Regular expressions are commonly used for tasks such as searching and replacing text, validating input, and parsing data.
Question 6: What is CPAN?
Answer: CPAN (Comprehensive Perl Archive Network) is a collection of over 250,000 open-source Perl modules and libraries that can be used to extend the functionality of Perl.
Question 7: What is the difference between “use” and “require” in Perl?
Answer: “use” is used to load a module at compile time, while “require” is used to load a module at runtime.
Question 8: What is the difference between “chomp” and “chop” in Perl?
Answer: “chomp” is used to remove the newline character from the end of a string, while “chop” is used to remove the last character from a string, regardless of what it is.
Question 9: How do you read command-line arguments in Perl?
Answer: Command-line arguments can be read using the “@ARGV” array in Perl. For example, the first argument can be accessed using “$ARGV[0]”.
Question 10: What is the difference between “split” and “join” in Perl?
Answer: “split” is used to split a string into an array, while “join” is used to concatenate elements of an array into a single string.
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