Perl Maven
  • Perl Tutorial
  • Books
  • Type keyword:
  • Archive
  • About
  • Atom feed
Beginner Perl Maven video tutorial
Beginner Perl Maven video course - video
  1. Introduction
    1. Welcome and Installation - video
    2. Editors and IDEs for Perl developers - video
    3. Your first script: Hello world - video
    4. Safety net (use strict; use warnings;) - video
    5. Debugging Perl scripts - video
    6. Comments - video
    7. Documentation of Perl - video
    8. POD - Plain Old Documentation - video
    9. Perl on the command line (screencast) - video
    10. Exercise: Hello World - video
    11. Solution: Hello World part 1 - video
    12. Solution: Hello World part 2 (what is the difference between comment and POD?) - video
  2. Scalars
    1. Scalar values and variables - video
    2. Common Errors and Warnings - video
    3. Variable interpolation - User Input and Output - chomp - video
    4. Numerical Operators - video
    5. String operators - video
    6. The 'if' statement - video
    7. Comparison Operators - video
    8. String to number conversion - video
    9. Compare Values - video
    10. undef - video
    11. Logical Operators in Perl - video
    12. True False - video
    13. Short Circuit - video
    14. String functions: index - video
    15. Substr - video
    16. strings in double quotes - video
    17. strings in single quotes - video
    18. Scope of Variables - video
    19. rand() and int() - video
    20. Here documents - video
    21. Exercise: rectangular - video
    22. Solution: area of rectangular - video
    23. Solution: area prompt and warn - video
    24. Solution: concatenation - video
    25. Exercise: number guessing game - video
    26. Solution: number guessing game - video
  3. Files
    1. die, warn, exit - video
    2. Open file - video
    3. Open file all - video
    4. Open file with error handling - video
    5. Open or die - video
    6. No such file - video
    7. read one line - video
    8. while loop - video
    9. Read file line by line - video
    10. Write to file - video
    11. Sum numbers in a file - video
    12. Debug sum numbers - video
    13. Analyze Apache log file - video
    14. Old style open - video
    15. Exercise: add more statistics - video
    16. Solution: add more statistics - video
    17. Exercise: write report to file - video
    18. Solution: write report to file - video
  4. Lists and Arrays
    1. Lists in Perl - video
    2. List assignment - video
    3. foreach loop over list - video
    4. Creating an array - video
    5. Array assignment - video
    6. Exercise: more statistics - video
    7. Array indexes - video
    8. Array indexes (screencast) - video
    9. Looks like number - video
    10. Command line parameters - video
    11. Command line parameters (screencast) - video
    12. Process command line using Getopt::Long - video
    13. Process command line using Getopt::Long (screencast) - video
    14. Process CSV file - video
    15. Process CSV file short version - video
    16. One-liner sum of column in CSV - video
    17. Process CSV file using Text::CSV_XS - video
    18. Join - video
    19. Exercise: improve the color selector - video
    20. Solution: improve the color selector - video
    21. Solution: improve the color selector - check input - video
    22. Solution: improve the color selector - force - video
    23. Solution: improve the color selector - colors.txt - video
    24. Solution: improve the color selector - filename - video
    25. Exercise: improve number guessing game - video
    26. Solution: number guessing game - multiple guesses - video
    27. Solution: number guessing game - exit - video
    28. Solution: number guessing game - s show - video
    29. Solution: number guessing game - n next game - video
    30. Solution: number guessing game - d debug toggle - video
    31. Solution: number guessing game - m move toggle - video
  5. Advanced Arrays
    1. The year of 19100 - video
    2. array in context - video
    3. Conext sensitivity - video
    4. Filehandle in SCALAR and LIST context - video
    5. slurp - video
    6. pop and push - video
    7. Loop controls: next last - video
    8. shift and unshift - video
    9. shift - video
    10. reverse - video
    11. sort - video
    12. The Ternary operator - video
    13. Count digits - video
    14. Exercise: display unique rows of a file - video
    15. Exercise: sort mixed string - video
    16. Solution: display unique rows of a file - video
  6. Functions and Subroutines
    1. Functions and Subroutines - video
    2. Defining subroutines - video
    3. Exercise: number guessing in sub - video
  7. Hashes
    1. A hash and its uses - video
    2. Creating a hash - video
    3. Creating a hash from an array - video
    4. hash in SCALAR context - video
    5. Fetching data from a hash - video
    6. exists, delete in hash - video
    7. Counting words in a file - video
    8. Dumping a hash - video
    9. Exercise: parse HTTP values - video
    10. Solution: parse HTTP values - video
    11. Exercise: improve color selector - video
    12. Solution: improve color selector - video
    13. Exercise: sort scores - video
    14. Solution: sort scores - video
    15. Exercise: improve Apache log analyzer - video
    16. Solution: improve Apache log-analyzer - video
    17. Exercise: parse variable width fields - video
    18. Solution: parse variable width fields - video
  8. Regular Expressions - part 1
    1. Regexes - video
    2. Were can I use Regexes - video
    3. Simple use of Regexes - video
    4. Finding a string in a file - video
    5. Single character match - video
    6. Match any character - video
    7. Character classes - video
    8. Negated character class - video
    9. Optional Characters - video
    10. Any number of any characters - video
    11. Quantifiers - video
    12. Quantifiers on Character classes - video
    13. Exercise: Regexes 1 - video
    14. Solution: regexes 1 - video
    15. Solution: regexes 2 - video
    16. Solution: regexes 3 - video
  9. Regular Expressions - part 2
    1. Regex Alternatives - video
    2. Regex Capturing - video
    3. Regex Anchors - video
    4. More about Character classes - video
    5. Special character classes - video
    6. Exercise: Match numbers with regex - video
    7. Solution: Match numbers with regex - video
    8. Exercise: hexa, octal, binary - video
    9. Solution: hexa, octal, binary - video
    10. Exercise: Roman numbers - video
  10. Regular Expressions - part 3
    1. m-for-matching - video
    2. Case insensitive regexes - video
    3. multiple lines in regexes - video
    4. Single-line regexes using /s - video
    5. /x modifier for verbose regexes - video
    6. substitution - video
    7. Global substitution with regexes - video
    8. Greedy regex quantifiers - video
    9. Minimal Regex Matching - video
    10. trim - video
    11. Fixing Assembly with Perl - video
    12. split with regex - video
    13. Fixing dates using Regexes - video
    14. Exercise: split HTTP GET request - video
    15. Solution: split HTTP using Regex - video
    16. Exercise: split path - filename/dirname - video
    17. Solution: split path - filename/dirname - video
    18. Exercise: sort SNMP numbers - video
    19. Solution: sort SNMP numbers - video
    20. Exercise: parse hours log file and create time report - video
    21. Exercise: parse INI file - video
    22. Exercise: parse perl file - video
  11. Shell to Perl
    1. shell-x - video
    2. external-programs - video
    3. Unix and DOS commands - video
    4. File globbing - video
    5. rename files - video
    6. directory handle - video
    7. File::HomeDir - video
    8. More UNIX commands - video
    9. File::Spec - video
    10. File::Find - video
  12. CPAN
    1. Using procedural Perl modules - video
    2. Using object oriented modules - video
    3. Changing @INC - video
    4. Changing @INC relative path - video
    5. What is CPAN? - video
    6. Some interesting CPAN modules - video
    7. Installing Perl modules from the OS vendor - video
    8. Installing Perl modules using cpan - video
    9. search.cpan.org - video
    10. CPAN Testers and CPAN Ratings - video
  13. Applications
    1. Create Linux user account - video
    2. Diskspace usage: df in Perl - video
    3. Reporting diskspace usage on a mail server - video
    4. disk usage: du in Perl - video
    5. Sending email with attachments - video
    6. Reading Excel file using Perl - video
    7. Read fixed width records - using unpack - video
    8. Processing config file - video

Solution: sort SNMP numbers - video

  • regexes
  • m

Prev Next

Original exercise

Prev Next

Gabor Szabo
Written by
Gabor Szabo

Published on 2015-08-02

If you have any comments or questions, feel free to post them on the source of this page in GitHub. Source on GitHub. Comment on this post

Author: Gabor Szabo

Gabor who runs the Perl Maven site helps companies set up test automation, CI/CD Continuous Integration and Continuous Deployment and other DevOps related systems.

Gabor can help refactor your old Perl code-base.

He runs the Perl Weekly newsletter.

Contact Gabor if you'd like to hire his service.

Buy his eBooks or if you just would like to support him, do it via Patreon.