regex
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 »