Basics of Vi editor in UNIX
Vi is present on any Unix installation and it is therefore useful to know some basic
commands. There are two modes: command mode and insertion mode. The commands mode is
accessed with [ESC], the insertion mode with i.appending mode with a .
Quit
Search and move
Delete text
commands. There are two modes: command mode and insertion mode. The commands mode is
Quit
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:w
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newfilename save the file to newfilename
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:wq or :x
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save and quit
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:q!
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quit without saving
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Search and move
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/string
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Search forward for string
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?string
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Search back for string
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n
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Search for next instance of string
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N
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Search for previous instance of string
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{
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Move a paragraph back
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}
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Move a paragraph forward
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1G
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Move to the first line of the file
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nG
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Move to the n th line of the file
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G
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Move to the last line of the file
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:%s/OLD/NEW/g
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Search and replace every occurrence
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Delete text
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dd
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delete current line
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D
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Delete to the end of the line
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dw
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Delete word
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x
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Delete character
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u
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Undo last
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U
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Undo all changes to current line
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