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Introduction to Linux, its history, distributions, and importance in DevOps.
Understanding Linux system architecture, kernel, shell, and file system hierarchy.
Learn different methods to install and run Linux systems.
Understanding the Linux file system hierarchy and important directories.
Essential Linux commands for navigation, file operations, and basic system tasks.
Advanced file operations including search, links, compression, and synchronization.
Understanding and managing file permissions, ownership, and access control.
Managing users, groups, and administrative access in Linux.
Installing, updating, and managing software packages across different Linux distributions.
Understanding and managing processes, jobs, and system resources.
Managing services with systemd, creating custom services, and understanding systemd architecture.
Understanding and configuring Linux networking, interfaces, DNS, and routing.
Managing firewalls with iptables, firewalld, and UFW for network security.
Secure Shell configuration, key-based authentication, tunneling, and remote file transfer.
Bash scripting fundamentals including variables, loops, conditionals, and functions.
Powerful text processing tools including grep, sed, awk, cut, sort, and regular expressions.
Tools and techniques for monitoring system performance, resources, and health.
Understanding system logs, journalctl, syslog, and log rotation.
Managing disks, partitions, LVM, and storage in Linux systems.
Understanding different Linux file systems and their use cases.
Automating tasks with cron, crontab, and systemd timers.
Understanding and managing environment variables, PATH, profiles, and shell configuration.
Mandatory Access Control with SELinux and AppArmor for enhanced security.
Understanding, configuring, and managing the Linux kernel.
Understanding input/output redirection, pipes, and stream manipulation.
Compressing and archiving files with tar, gzip, bzip2, xz, and zip.
Understanding the Linux boot sequence from BIOS to login.
Common Linux problems, diagnostic techniques, and solutions.
Linux containers fundamentals - namespaces for isolation and cgroups for resource control.
Common Linux interview questions and comprehensive answers for DevOps roles.