Linux & Systems
This section is about the Linux work you will actually do on servers: finding logs, checking services, debugging processes, tracing network issues, and understanding where things live on disk.
What’s in this guide
Section titled “What’s in this guide”| Page | Content |
|---|---|
| Filesystem and Paths | Where configs, logs, binaries, runtime state, and kernel views live |
| Processes and Signals | Finding processes, reading state, and stopping the right thing safely |
| systemd Services | Starting, stopping, editing, and debugging long-running services |
| Logs with journald | Pulling the last useful logs fast with journalctl |
| Permissions and Users | Ownership, groups, modes, and common access mistakes |
| Networking on a Host | Interfaces, routes, listeners, DNS, and quick reachability checks |
| Disk and Filesystem Checks | Space, mounts, inode pressure, and where the bytes went |
| Packages and Binaries | How software gets installed, where executables land, and version checks |
| SSH and Remote Access | Connecting to hosts, copying files, and basic config checks |
| Troubleshooting Playbooks | Short workflows for common host and service failures |
| Resume Advice | What Linux/SRE work is worth highlighting and how to frame it |
| Terminology | Quick glossary for this section |