System Administration
https://www.debian.org/intro/why_debian.fr.html
https://www.booleanworld.com/guide-linux-top-command/
https://apparmor.net
https://www.linuxfoundation.org/blog/blog/classic-sysadmin-configuring-the-linux-sudoers-file
https://debian-facile.org/doc:systeme:apt:branches-debian
https://monovm.com/blog/what-is-ssh-port/#How-does-SSH-work?-%5BA-Complete-Guide
https://www.tecmint.com/difference-between-apt-and-aptitude/
https://linuxconfig.org/introduction-to-the-lsblk-command
https://www.geeksforgeeks.org/swap-space-in-operating-system/
https://ostechnix.com/how-to-set-password-policies-in-linux/
https://www.a2hosting.com/kb/getting-started-guide/accessing-your-account/using-ssh-secure-shell#What-is-SSH-access-and-why-would-you-need-to-use-SSH
https://www.bleepingcomputer.com/tutorials/introduction-to-mounting-filesystems-in-linux/
https://docs.oracle.com/en/virtualization/virtualbox/6.0/user/intro-running.html#intro-save-machine-state
https://wiki.debian.org/DebianBullseye
https://www.geeksforgeeks.org/lsblk-command-in-linux-with-examples/
https://community.tenable.com/s/article/What-is-CPU-Load-Average
https://www.educba.com/centos-vs-debian/
https://phoenixnap.com/kb/crontab-reboot
https://www.networkworld.com/article/2726217/how-to-enforce-password-complexity-on-linux.html
https://www.2daygeek.com/linux-check-cpu-memory-swap-utilization-percentage/
https://miro.com/app/board/uXjVOa3yJvI=/?invite_link_id=890388738483
https://tldp.org/HOWTO/LVM-HOWTO/disclaimer.html
https://manifold.net/doc/mfd9/using_sha_checksums.htm
https://www.youtube.com/watch?v=SOjtB4n8WiE
https://velog.io/@sehhong/born2beroot-cmd
https://www.cyberciti.biz/faq/check-how-many-cpus-are-there-in-linux-system/
https://www.youtube.com/watch?v=sB_5fqiysi4
https://openclassrooms.com/fr/courses/7170491-initiez-vous-a-linux?archived-source=43538
https://les-differences.com/difference-ubuntu-debian/#:~:text=et%20DebianAdvertisements-,Quelle%20est%20la%20différence%20entre%20Ubuntu%20et%20Debian%20%3F,à%20jour%20logicielles%20plus%20fréquentes.
https://www.tecmint.com/understand-linux-load-averages-and-monitor-performance/
https://www.redhat.com/en/topics/virtualization/what-is-virtualization
https://www.linuxtricks.fr/wiki/lvm-sous-linux-volumes-logiques
https://www.openlogic.com/blog/centos-vs-debian
https://baigal.medium.com/born2beroot-e6e26dfb50ac
https://doc.ubuntu-fr.org/lvm
https://ibani-b2br.super.site
https://www.server-world.info/en/note?os=Debian_10&p=password
https://askubuntu.com/questions/546219/what-is-the-difference-between-root-all-allall-all-and-root-all-all-all
https://man.cx/pam_pwquality(8)
https://fr.wikipedia.org/wiki/Version_d%27un_logiciel