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0x06-regular_expressions

README.md

0x06. Regular expression

A project that further strengthened my foundation in system engineering - devops

General Requirements

  • Allowed editors: vi, vim, emacs
  • All your files will be interpreted on Ubuntu 20.04 LTS
  • All your files should end with a new line
  • A README.md file, at the root of the folder of the project, is mandatory
  • All your Bash script files must be executable
  • The first line of all your Bash scripts should be exactly #!/usr/bin/env ruby
  • All your regex must be built for the Oniguruma library

Mandatory Tasks

0. Simply matching School

Requirements:

  • The regular expression must match School
  • Using the project instructions, create a Ruby script that accepts one argument and pass it to a regular expression matching method Example:
School$
sylvain@ubuntu$ ./0-simply_match_school.rb "Best School" | cat -e
School$
sylvain@ubuntu$ ./0-simply_match_school.rb "School Best School" | cat -e
SchoolSchool$
sylvain@ubuntu$ ./0-simply_match_school.rb "Grace Hopper" | cat -e
$

1. Repetition Token #0

Requirements:

  • Find the regular expression that will match the above cases
  • Using the project instructions, create a Ruby script that accepts one argument and pass it to a regular expression matching method

2. Repetition Token #1

Requirements:

  • Find the regular expression that will match the above cases
  • Using the project instructions, create a Ruby script that accepts one argument and pass it to a regular expression matching method

3. Repetition Token #2

Requirements:

  • Find the regular expression that will match the above cases
  • Using the project instructions, create a Ruby script that accepts one argument and pass it to a regular expression matching method

4. Repetition Token #3

Requirements:

  • Find the regular expression that will match the above cases
  • Using the project instructions, create a Ruby script that accepts one argument and pass it to a regular expression matching method
  • Your regex should not contain square brackets

5. Not quite HBTN yet

Requirements:

  • The regular expression must be exactly matching a string that starts with h ends with n and can have any single character in between
  • Using the project instructions, create a Ruby script that accepts one argument and pass it to a regular expression matching method Example:
$
sylvain@ubuntu$ ./5-beginning_and_end.rb 'hbn' | cat -e
hbn$
sylvain@ubuntu$ ./5-beginning_and_end.rb 'hbtn' | cat -e
$
sylvain@ubuntu$ ./5-beginning_and_end.rb 'h8n' | cat -e
h8n$
sylvain@ubuntu$
$

6. Call me maybe

This task is brought to you by a professional advisor Neha Jain, Senior Software Engineer at LinkedIn.

Requirement:

  • The regular expression must match a 10 digit phone number Example:
4155049898$
sylvain@ubuntu$ ./6-phone_number.rb " 4155049898" | cat -e
$
sylvain@ubuntu$ ./6-phone_number.rb "415 504 9898" | cat -e
$
sylvain@ubuntu$ ./6-phone_number.rb "415-504-9898" | cat -e
$
sylvain@ubuntu$

7. OMG WHY ARE YOU SHOUTING?

Requirement:

  • The regular expression must be only matching: capital letters Example:
ILOVESYSADMIN$
sylvain@ubuntu$ ./7-OMG_WHY_ARE_YOU_SHOUTING.rb "WHAT do you SAY?" | cat -e
WHATSAY$
sylvain@ubuntu$ ./7-OMG_WHY_ARE_YOU_SHOUTING.rb "cannot read you" | cat -e
$
sylvain@ubuntu$