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In this section we will briefly cover two other common and popular text editors available for HPCs and used in Linux Command Line Interface



Nano

GNU nano is a small and easy to use command line text editor. Besides basic text editing, nano offers features like undo/redo, syntax coloring, interactive search-and-replace, auto-indentation, line numbers, word completion, file locking, backup files, and internationalization support.

  • Nano is terminal based and for use in command line.

  • There are add-ons which allow it to be used in a GUI

  • More information for using Nano on ARCC HPCs may be found here.


Nano - Try it:

In an HPC terminal window, launch nano with the nano command.

  • To open a specific file in nano, use command nano </path/to/file/filename> to open that file.

  • You can insert text simply by typing it in.

  • Use the arrow keys to navigate through the document.

  • The Ctrl key is a key for “special” or common file-handling and administrative keystrokes.

  • Hit Ctrl+x to exit the file.

  • Nano has many “cheat sheets” available online.


Emacs

Emacs is a portable platform for creating applications with a text user interface. It serves as a fully programmable text editor. Many users use Emacs in a variety of different ways.

  • Emacs may be run in a command prompt (command line environment) or in a GUI.

  • It can also be used as an IDE (Integrated Development Environment).

  • More information for using Emacs on ARCC HPCs may be found here.


Emacs - Try it (GUI):

To open it in a Graphical User Interface:

  • Open OnDemand

  • Launch a OnDemand XFCE Desktop Session

  • Open Emacs by opening a terminal within your OnDemand desktop, and typing: emacs , then hit enter/return key

  • You should see a GUI version of emacs.

  • Click on the Emacs Guided Tour

  • Type ctrl + x, followed by ctrl + c to exit out of emacs.


Emacs - Try it (Command Line):

To open it in a GUI:

  • Open OnDemand

  • Launch shell terminal window

  • Run emac with emacs command.

  • Type ctrl + h to get to the help screen.

  • Type ctrl + x, followed by ctrl + c to exit out of emacs.


08.01 Next Steps

 Emacs Text Editor Cheat Sheets

08.02 Further Trainings: UWYO LinkedIn


08.03 Summary

In this workshop we have:

  • Introduced users, using the Linux command line environment, to text editors: Specifically vim.

  • Demonstrated how to:

    • Open, edit, update, save and quit a text editor.

    • Use the keyboard and shortcuts to navigate around the text file.

    • Use the command line to search for terms within the text file.


 

 

 

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