Ravi Sir's Cards › AWS
Script template
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
Why do we need it?
Strict mode.
set -Eeuo pipefail
What is it?
log and die.
die(){ log ERROR "$*"; exit 1; }
How to do it
Lock.
exec 9>/tmp/x.lock; flock -n 9
Example
Temp and cleanup.
trap 'rm -rf "$tmp"' EXIT