Shell Programming

Cribbage: Sorting Your Hand

We've been working on writing code for the game Cribbage, and last time, I created the code needed to pick a random subset of six cards out of a "deck" and display them in an attractive format—like this: $ sh cribbage.sh Card 0: 7C Card 1: 5H Card 2: 9H Card 3: 10S Card 4: 5D Car

Working with Stdin and Stdout

Previously, I erroneously titled my column as "SIGALRM Timers and Stdin Analysis". It turned out that by the time I'd finished writing it, I had spent a lot of time talking about SIGALRM and how to set up timers to avoid scripts that hang forever, but I never actually got to the topic of stdin analysis.

SIGALRM Timers and Stdin Analysis

It's not hard to create functions to ensure that your script doesn't run forever. But what if you want portions to be timed while others can take as long as they need? Not so fast, Dave explains in his latest Work the Shell.