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Lots of great AWK tutorials in here that are more in depth, but I'll share another. I always go back to Brian Kernighan's personal help file:

https://www.cs.princeton.edu/courses/archive/spring19/cos333...

Brian Kernighan has a knack for explaining languages very precisely and elegantly.

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And for the flash card type of learners it is good to see the "HANDY ONE-LINE SCRIPTS FOR AWK" page is still available. See the links in the Credits section at the bottom for more great reading:

https://www.pement.org/awk/awk1line.txt

That author also edited the "USEFUL ONE-LINE SCRIPTS FOR SED" page:

https://www.pement.org/sed/sed1line.txt

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