Linux: System Administration
Shell, permissions, processes, systemd services, networking and Bash scripting. The essential foundations for any IT/DevOps profile.
- Navigate and administer a Linux system
- Manage permissions, users and processes
- Configure services and networking
- Automate with Bash scripts
- Navigate, administer and troubleshoot any Linux server from the command line
- Diagnose a performance problem (CPU, memory, I/O) with the right system tools
- Automate recurring administration tasks with reliable Bash scripts
- Understand what a process, a systemd service or a system log is doing, and read a machine
The programme
Day 1 - System basics
- FHS directory tree, navigation, file management and archives (tar, gzip, rsync)
- POSIX permissions, ACLs, users, groups, sudo and PAM
- Process management: ps, top, htop, kill, nice, ulimit
- Package management: apt/dnf, snap, compiling from source
- Workshop: hardening an Ubuntu server - permissions, sudo, banner, fail2ban
Day 2 - Services & networking
- systemd: units, targets, journald, systemctl enable/mask/override
- Network configuration: NetworkManager, ip, ss, /etc/resolv.conf, netplan
- Logs and diagnostics: journalctl, rsyslog, logrotate, dmesg, strace, lsof
- Firewall: nftables / ufw, iptables, SELinux/AppArmor basics
- Workshop: deploy and monitor an Nginx web service with systemd
Day 3 - Scripting & automation
- Bash: variables, conditions, loops, functions, arrays, getopts
- Pipes, redirections, process substitution, heredoc
- Scheduled tasks: cron, anacron, systemd timers
- Best practices: set -euo pipefail, shellcheck, structured logging
- Workshop: incremental backup script with rotation and email alert
Who is this for
Future administrators, developers and ops engineers new to Linux.
Prerequisites
- No particular prerequisites
Format
Frequently asked questions
Is the course eligible for OPCO or CPF funding?
No. Sphinx-Digital is not Qualiopi certified and is not listed on Mon Compte Formation. The course is invoiced directly to the company or the individual, with no external funding.
What is the difference between the public (inter-company) and in-company formats?
In the public format, you join a session with participants from other companies (3 to 10 people). In-company, we run a session dedicated to your team, on your site or remotely, with content adapted to your context. In-company pricing is available on quote.
Remote or on-site: what are the practical differences?
Content and labs are identical. Remotely, labs run on cloud environments accessible from a browser, with nothing to install. On-site, you provide the workstations; labs can run in the cloud or locally depending on your infrastructure.
How many participants per session?
3 to 10 participants at most. This deliberate limit ensures everyone can ask questions, adapt the exercises to their context and get a detailed answer.
What is the evening format?
The evening format spreads the same course over 4 sessions of 3.5 hours (14 hours in total), in the evening from 6:30 pm to 10:00 pm. Same content, same labs, same price, so you can build skills without taking days off.
How does payment work?
Courses are invoiced on quote, by bank transfer. Payment in instalments is possible. We issue a training agreement for companies that want their training department to cover the cost.
Interested in this course?
Join the next session or request a tailored in-company session.
What participants say
Not sure this course fits your context?
A 20-minute call to take stock before you enrol, with no sales pitch.