Gnu Awk - Part 12

Introduction

This is the twelfth episode of the “Learning Awk” series which is being produced by b-yeezi and myself.

In this episode I want to continue with the subject I started in episode 10, an advanced-level look at arrays in Awk. This episode covers patsplit which can split a string into an array, the built-in array PROCINFO which can be used to control how awk sorts arrays, as well as asort and asorti, built-in functions for sorting arrays.

In case it might be of interest I have also included a section describing a recent use I made of awk to solve a problem.

Long notes

I have provided detailed notes as usual for this episode, and these can be viewed here.

Links

• GNU Awk User’s Guide
• Previous shows in this series on HPR:
  • “Gnu Awk - Part 1” - episode 2114
  • “Gnu Awk - Part 2” - episode 2129
  • “Gnu Awk - Part 3” - episode 2143
  • “Gnu Awk - Part 4” - episode 2163
  • “Gnu Awk - Part 5” - episode 2184
  • “Gnu Awk - Part 6” - episode 2238
  • “Gnu Awk - Part 7” - episode 2330
  • “Gnu Awk - Part 8” - episode 2438
  • “Gnu Awk - Part 9” - episode 2476
  • “Gnu Awk - Part 10” - episode 2526
  • “Gnu Awk - Part 11” - episode 2554
• Resources:
  • ePub version of these notes
  • Examples: awk12_ex1.awk, awk12_ex2.awk, awk12_ex3.awk, awk12_ex4.awk, awk12_ex5.awk, awk12_ex6.awk, awk12_ex7.awk, awk12_ex8.awk, awk12_ex9.awk, awk12_ex10.awk, awk12_extra.awk