vi

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for editing file content in terminal

https://www.atmos.albany.edu/daes/atmclasses/atm350/vi_cheat_sheet.pdf https://docs.oracle.com/cd/E19253-01/806-7612/editorvi-62/index.html

Frequently used Commands

i to switch to editing mode (insert) esc to switch back to command mode /<SEARCH> - replace

with the word you want to find :wq - (write and quit) save document and quit