Better Bash Scripting in 15 Minutes
The tips and tricks below originally appeared as one of Google's "Testing on the Toilet" (TOTT) episodes. This is a revised and augmented version. Safer Scripting I start every bash script with the following prolog: #!/bin/bash set -o nounset set -o errexit This will take care of two very common errors: Referencing undefined variables (which default to "") Ignoring failing commands The two setting
Last.fm – the Blog · Mapreduce Bash Script
One night at the pub we discussed whether one could replace Hadoop (a massive and comprehensive implementation of Mapreduce) with a single bash script, an awk command, sort, and a sprinkling of netcat. This turned into a weekend project dubbed bashreduce. To be fair, Hadoop probably does a few more things than bashreduce. But we’ve managed to cover a few key concepts in our script: Task coordinati
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