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João Vitor
João Vitor

Posted on • Edited on

Update git repos in parallel

#linux #parallel #git

Are you living in a microservices world?
Do you need to keep multiple git repositories in sync?

How much time would it take to update 63 repositories?

The update-repos.sh script uses gnu-parallel and execute the git pull --rebase and git fetch --prune in parallel.

Update repositories in parallel 

cd ~/github-orgs/PacktPublishing time update-repos.sh
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Output:

[truncated] job 56 completed ./Develop-and-Operate-Microservices-on-Kubernetes Already up to date. job 55 completed ./DevOps-Puppet-Docker-and-Kubernetes Already up to date. job 62 completed ./-Kubernetes-for-Absolute-Beginners---Hands-on [truncated] real 0m9,083s user 0m6,321s sys 0m2,668s
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If you do that synchronously it would have taken near 4 minutes.

real 4m53,583s user 0m6,480s sys 0m4,776s
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