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Mastering vi Editor in Unix: Essential Commands and Techniques

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Presentation Transcript

  1. Unit 3 – The vi editor • Understand the importance of vi in Unix • Be able to use vi • Create and change text, copy and paste • Search for patterns, global multiple changes • Read and write portions of files • Edit multiple files • Cut and past from other text displays

  2. Importance of vi • Importance of vi and its variants in Unix • Available in any Unix system even if the system is running at low level without X-windows, vi does not need a window, it can work in the terminal display • Vi is a powerful full screen editor • Old style, vim • Arrow keys sometimes work, sometimes don't, you have to find out. Sometimes you have to leave input mode when navigating, sometimes don't • You should know a modicum of vi

  3. Using vi • Input mode • Command mode • Switching between these two • Commands: i o yy p P x dd • Repeat last command

  4. More vi commands • Search for patterns • Search and replace patterns • Save file • Quit vi • Commands: s w q

  5. More vi commands • Read and write portions of files • Join lines • Edit multiple files • Commands: r w J e n

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