Learn Linux and prepare for Job Interview

Explore the Linux directory structure from the root slash to key folders like /bin, /usr/bin, /lib, /proc, /var, and /home, and distinguish root from /root.

Explore linux directories and absolute versus relative paths, including special dirs dot, dot dot, root, and tilde. Master cd, pwd, mkdir, mkdir -p, and rm -rf for navigation and management.

Master ls by listing files, including hidden ones with -a; use -l long format, -la for everything, -h for human readable sizes, and -t to sort by last modified date.

Learn how to create and manage links in Linux using the ln command, including soft (symbolic) links and hard links, their differences, and practical examples with directories and files.

Master input and output redirection, saving command output to text files, using sort with file input, appending results, and silencing standard error with /dev/null.

Explore how environment variables differ from regular variables, define them in login shell profiles or system-wide profiles, and apply changes with source or dot commands.

Learn how Linux shell operators work with variables, quotes, and echo, using export and arithmetic expressions to perform addition, subtraction, multiplication, division, and modulus.

Explore linux shell functions by defining a simple hello function and invoking it by name to echo Hello, world. Understand that function invocation mirrors basic programming, with or without brackets.

Explain what Linux is as a Unix-based kernel, its open-source GPL nature, core components like shells and GUI, and its differences from Unix, including LILO bootloader.