Recent Posts

Forgotten work in git repos

Check your git repo and see your non-sync'd work

Testing PhotonOS

This test was as fast as a tiny light particle.

Update flatpaks using timers

Leverage the user mode from systemd and timers to update flatpak

Rootless Linux containers on Windows

Let's install WSL 2 and spin up some podman rootless containers

Number of cores

Get cores count in bash in two bad-chained commands and a third good answer


A cool markdown note editor

readline shortcuts

you can search and edit in a shell prompt !

Broken loops

And how to fix them

Custom DNS over DHCP

Have your cake and eat it too: yes you can

Git rambo



Julien Pericat

Linux Sysadmin, SysOps & DevOps friendly

Who am I ?

Hello 👋

I've started to use Linux in 2003, and I've used it daily since 2005. I got to play with Ubuntu, Fedora (core !), Debian, CentOS, ArchLinux, Alpine..

My hobby became my job in 2017, I work as a Linux system administrator 🐧

My main points of interest revolves around containers and automation. Among other, I work with Docker, Ansible, Chef, Gitlab-CI, Drone..

I am always interested in feedbacks, comments or thoughts about this blog. If I made a mistake or you wan't to point something else, feel free to contact me 👍


  • Continuous Delivery
  • Continuous Deployment
  • Containerisation
  • Orchestration
  • Automation


  • D.U.T. in Network and Telecommunication, 2017

    Velizy Institute of Technology (Paris-Saclay)