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Agenda
• Text Editor in Linux
• How to use vi Start vi First look at vi vi mode Switch to insert mode copy, cut and paste undo search save and exit
• Reference
Text Editor in Linux
• We have several choices: vi vim gedit (for GNOME) like the NotePad in Windows And many, many others
Starting vi / vim
• Use vi to open an already existing file by typing vi file-name
• Create a new file by typing vi new-file-name
First look at vi
First look at vim
vi mode
• vi has two modes: command mode insert mode
• In command mode, the letters of the keyboard perform editing functions (like moving the cursor, deleting text, etc.). To enter command mode, press the escape <Esc> key.
• In insert mode, the letters you type form words and sentences. Unlike many word processors, vi starts up in command mode.
Switch to insert mode
• Type the following key:i -- to insert mode at course position
a -- to insert mode where course back a character
Switch to insert mode (CONT.)
I -- to insert mode where course jump to the line head
A -- to insert mode where course jump to the line end
o -- to insert mode and begin a new line under course position
O -- to insert mode and begin a new line before course position
s -- to insert mode and delete the character at course position
S -- to insert mode and delete the line at course position
Delete and block operation -- cut, copy and paste
• Switch to command mode, pressing the escape <Esc> key. Type v, switch to block operation move course to select block c to cut, y to copy p to paste the block to right position of course
• Switch to command mode, pressing the escape <Esc> key. Use shortcuts for delete dd -- delete the current line dw -- delete the current word
undo
• Switch to command mode, pressing the escape <Esc> key. :u -- undo last operation :e! -- give up all operations and begin edit again
Search in text
• vi supports to search and find a text in the whole file
• Switch to command mode, pressing the escape <Esc> key. /keyword -- to search forward for the keyword
?keyword -- to search backward for the keyword
• type n on the keyboard to find the next
Save and exit
• Switch to command mode, pressing the escape <Esc> key. :w -- save file :q -- no change and quit :wq -- save file and quit :q! -- force to quit, no matter change file or not
:x –- save file and exit vi
More reading
• http://www.washington.edu/computing/unix/vi.html
• http://www.uwyo.edu/ASKIT/displaydoc.asp?askitdocid=258&parentid=1
• http://sparky.rice.edu/~hartigan/vi.html
