Regular Expressions

Regex testing

• https://regexr.com/
• https://regex101.com/
• https://extendsclass.com/regex-tester.html

Learning resources

• https://shiffman.net/a2z/regex/ - video
• https://regexone.com/ - interactive site
• http://regextutorials.com/ - interactive site
• https://www.tldp.org/LDP/abs/html/regexp.html
• https://regexcrossword.com/
• https://www.regular-expressions.info/tutorial.html
• https://qntm.org/files/re/re.html
• https://github.com/ziishaned/learn-regex
• http://www.rexegg.com/
• https://blog.codinghorror.com/regular-expressions-now-you-have-two-problems/
• https://blog.patricktriest.com/you-should-learn-regex/
• https://projects.lukehaas.me/regexhub/
• http://eloquentjavascript.net/09_regexp.html
• https://media.cheatography.com/storage/thumb/davechild_regular-expressions.750.jpg

Sed

• http://www.grymoire.com/Unix/Sed.html