HPR2816: Gnu Awk - Part 14

Hacker Public Radio

Introduction

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

In this episode and the next I want to start looking at redirection within Awk programs. I had originally intended to cover the subject in one episode, but there is just too much.

So, in the first episode I will be starting with output redirection and then in the next episode will spend some time looking at the getline command used for explicit input, often with redirection.

Long notes

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

Links

• GNU Awk User’s Guide
  • Redirecting output of print and printf
  • Special Files for Standard Preopened Data Streams
  • Special File names in gawk

• 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
  • “Gnu Awk - Part 12” - episode 2610
  • “Gnu Awk - Part 13” - episode 2804
• Resources:
  • ePub version of these notes
  • Examples: awk14_fruit_data.txt, awk14_ex1.awk, awk14_ex2.awk, awk14_ex3.awk