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Clairos Learn

34 lessons · UNIX / Linux

Terminal basics

Orientation, paths, hidden files, and command history.

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What you will practice

Navigation; Paths and shortcuts; Hidden files; Command history.

Use the worked examples when needed, then test your understanding without them.

  1. 01NavigationMap the training server, learn where you are, and move through directories.Practice
  2. 02Paths and shortcutsPractice absolute paths, relative paths, dot, dot-dot, and home shortcuts.Practice
  3. 03Hidden filesUse long and all listings to reveal dotfiles and read shell startup notes.Practice
  4. 04Command historyRun a few safe commands, review history, and clear the display without resetting state.Practice
  5. 05Manual pagesUse simulated manual pages to learn command intent before running tools.Practice
  6. 06Command locationsUse which to understand how shells find commands.Practice
  7. 07Environment variablesInspect a simulated environment without exposing real browser or server secrets.Practice
  8. 08System identityInspect simulated kernel, hostname, and clock output.Practice
  9. 09Identity contextUse identity commands before interpreting permissions and logs.Practice
  10. 10Option patternsCompare short flags and long listings in a safe directory.Practice
  11. 11Safe movementMove between root, etc, and home while checking location.Practice
  12. 12Quoted pathsCreate and list a path that contains a space.Practice
  13. 13Output redirectionWrite simple command output into a safe lab file.Practice
  14. 14Reset the labSee the difference between local changes and resetting the lab environment.Practice
  15. 15Printf formattingUse printf for predictable terminal output.Practice
  16. 16Path componentsSplit paths into filenames and directories.Practice
  17. 17Link targetsCreate and inspect a symbolic link target.Practice
  18. 18Existence checksUse test to reason about files and directories.Practice
  19. 19Command composition reviewCombine printing, tee, and reading a local note.Practice
  20. 20Terminal checkpointReview location, identity, and command memory.Practice
  21. 21Manual depth reviewUse manual pages and command paths before running unfamiliar tools.Practice
  22. 22Option reading habitsCompare option-heavy commands without changing state.Practice
  23. 23Terminal recoveryRecover orientation after clearing output or getting lost.Practice
  24. 24Quoted path habitsUse quotes when filenames contain spaces.Practice
  25. 25Command anatomy reviewSeparate a command name, its options, and its target before pressing Enter.Practice
  26. 26Option reading drillUse help output before applying search options to a log.Practice
  27. 27Quoted paths with spacesUse quotes so a path containing spaces remains one argument.Practice
  28. 28Escaped spacesUse a backslash to keep an escaped space inside one path argument.Practice
  29. 29Builtins and executable pathsCompare shell builtins with commands found on PATH.Practice
  30. 30Output capture contractPrint a predictable marker, capture it, and read it back.Practice
  31. 31Absolute and relative path reportResolve relative names into full canonical paths.Practice
  32. 32Help before changeBuild the habit of reading command guidance and current metadata first.Practice
  33. 33Terminal recovery sequenceReorient, review recent work, and clear the display without losing state.Practice
  34. 34Terminal foundations bridgeCheckpoint command lookup, path resolution, output capture, and history.Practice