This is probably the most concise introduction to awk I've read.
For more extensions[0] and advanced features like arrays of arrays and array sorting, there's also gawk. And for larger files there's performance driven mawk which can drastically increase processing speed[1].
For more extensions[0] and advanced features like arrays of arrays and array sorting, there's also gawk. And for larger files there's performance driven mawk which can drastically increase processing speed[1].
[0]https://www.gnu.org/software/gawk/manual/html_node/Extension...
[1]http://brenocon.com/blog/2009/09/dont-mawk-awk-the-fastest-a...