What is your level of knowledge of the Linux operating system and what key skills can you highlight?

The level of Linux knowledge depends on experience, but the core skills important for a DevOps engineer include:

• Working with the command line (bash, sh)
• Managing files and permissions (chmod, chown, ls, cp, mv)
• Monitoring processes and resources (ps, top, htop, free, df)
• Package management (apt, yum, dnf)
• Configuring network settings (ifconfig, ip, netstat, ss)
• Working with system services (systemctl, service)
• Managing users and groups (useradd, passwd)
• Configuring and working with logs (journalctl, /var/log)
• Writing and debugging bash scripts

For example, the ability to quickly identify and fix network or permission issues, as well as automating routine tasks with scripts, are key skills for effective Linux work in DevOps.