| Path | Topic | Outcome |
|---|---|---|
| 01 | Linux mental model | Understand the host before changing it |
| 02 | Reliable shell work | Use shell commands and scripts safely |
| 03 | Filesystem and paths | Diagnose layout, mounts, and capacity |
| 04 | Users and permissions | Apply least privilege |
| 05 | Processes and signals | Inspect process state and limits |
| 06 | systemd services | Operate supervised services |
| 07 | Network diagnosis | Troubleshoot connectivity layer by layer |
| 08 | Storage and mounts | Separate device, filesystem, and usage problems |
| 09 | Logs and journals | Preserve and query incident evidence |
| 10 | Host security | Establish a practical baseline |
| 11 | Performance | Find the constrained resource |
| 12 | Safe automation | Write repeatable operational scripts |
| 13 | Incident workflow | Investigate and mitigate systematically |