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Write clearly – don't be too clever.
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Say what you mean, simply and directly.
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Use library functions whenever feasible.
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Avoid too many temporary variables.
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Write clearly – don't sacrifice clarity for "efficiency."
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#!/bin/bash | |
# bash generate random alphanumeric string | |
# | |
# bash generate random 32 character alphanumeric string (upper and lowercase) and | |
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1) | |
# bash generate random 32 character alphanumeric string (lowercase only) | |
cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1 |
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#!/bin/sh | |
title=$1 # graph title | |
xlabel=$2 | |
ylabel=$3 | |
output=$4 # output image name | |
data=$5 # data file | |
cols=$6 # which columns to show in the graph | |
lines='' # the plot lines |
This gist is part of a blog post. Check it out at:
http://jasonrudolph.com/blog/2011/08/09/programming-achievements-how-to-level-up-as-a-developer