Linux & Bash Shell Scripting: Foundation for DevOps & Cloud

Master the Linux pipe to combine commands into a single operation, piping outputs from cat and ls into grep to filter results like .txt files and Docker terms.

Explore how the find command searches files and directories from current location and subdirectories, using options like -type d, -type f, and -empty, and how grep and locate fit in.

Learn how to use sudo and su to elevate privileges, switch to the root user, and manage admin tasks in Linux. Understand why permission denied occurs for normal users.

Understand linux file permissions in symbolic mode, covering owner, group, and others with read, write, and execute rights, and learn to view with ls -l and modify them with chmod.

Learn to check Linux system resources using free, free -h, df -h, and du -sh, and monitor cpu, memory, and disk with vmstat every two seconds.

Learn how to find help for linux commands using man, info, and help, with examples like pwd and grep, and distinguish when to use built-in help versus manual pages.

Learn to manage Linux services with systemctl, including starting, stopping, restarting, enabling, disabling, reloading, and checking status, for SSH, Docker, Jenkins, and Apache web servers.

This lecture introduces shell scripting in Linux to automate running multiple commands, covering variables, loops, conditionals, and how to write and execute scripts with bash, sh, and shebang.

Explore loops in shell scripting, including for and while loops, with initialization, condition checks, and updates. Learn how to implement, print outputs, and avoid infinite loops in Bash scripts.

Understand how to store multiple values with arrays in shell scripting, and use for loops to access elements and print or deploy automation data.

Discover how the shell case statement replaces long if-else chains by matching input against patterns and executing corresponding commands, with a default option for unknown inputs.