Lesson 4: Sudo & Privilege Escalation

The sudo command allows users to run commands with elevated privileges (as a superuser/administrator). This is essential for system administration tasks.

The Filesystem

Linux uses a hierarchical file system structure starting from the root directory (/). Understanding file system navigation is crucial for working with Linux.

Permissions

Linux file permissions control who can read, write, or execute files. Permissions are set for three categories: owner, group, and others. Understanding and managing permissions is critical for system security.