What is your experience with Linux operating systems? What can you do at the administration level?

My experience with Linux at the system administration level includes:

• Installing and configuring servers (Debian, CentOS, Ubuntu)
• Managing users and permissions (chmod, chown, sudo)
• Configuring network interfaces and firewalls (iptables, nftables)
• Monitoring system resources (top, htop, vmstat, iostat)
• Managing processes and services (systemd, init.d)
• Automating tasks with bash scripts
• Configuring and managing packages (apt, yum)
• Data backup and recovery
• Working with logs and their analysis (journalctl, logrotate)

For example, I configured servers for web applications, ensured their security and stability, and automated routine tasks using scripts.