Find rows in which columns 3 or 4 match a certain regular expression

Filter CSV rows with string and pattern matching.
Included in csvkit.
More information: <https://csvkit.readthedocs.io/en/latest/scripts/csvgrep.html>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

csvgrep -c {{3,4}} -r {{regular_expression}} {{data.csv}}

click the source code to copy install csvgrep on any operating system with command-not-found.com