A text editor is a tool to assist the user with creating and editing files. There is no "best" text editor; it depends on personal preferences. Regardless of your typical workflow, you will likely need to be proficient in using at least one common text editor if you are using Linux for scientific computing or similar work. Two of the most widely used command-line editors are Vim and Emacs, both of which are available on TACC systems via the vim and emacs commands, respectively.