CompTIA XK0-006 glossary of Linux admin, shell, services terms, traps, and decision cues.
Use this glossary when CompTIA Linux+ (XK0-006) terms start to blur together. The goal is practical recognition, not encyclopedia coverage.
| Term | Exam meaning |
|---|---|
| systemd | Linux init and service management system. |
| inode | Filesystem metadata structure representing a file object. |
| ACL | Access control list for permissions beyond standard user/group/other bits. |
| SSH | Secure Shell protocol for remote administration. |
| Package manager | Tool that installs, updates, and removes software packages. |
| Shell script | File containing shell commands for repeatable automation. |
| Pair | How to separate them |
|---|---|
| System management vs Storage and devices | Ask which layer the scenario is testing, then match the answer to that layer only. |
| Control vs evidence | A control changes behavior; evidence proves behavior or supports investigation. |
| Managed service vs custom build | Managed services win for lower operational effort unless the requirement needs unsupported customization. |
| Prevention vs detection | Prevention blocks or reduces a bad event; detection finds or reports that it happened. |
Do not memorize terms in isolation. For each term, write one scenario where it is the best answer, one scenario where it is a distractor, and one signal that proves it worked.