% Linux System Administration
Editing
•Commands preceded with "$" imply that you should execute the command as a general user
- not as root.
•Commands preceded with "#" imply that you should be working as root.
•Commands with more specific command lines (e.g. "rtrX>" or "mysql>") imply that you are
executing commands on remote equipment, or within another program.
vi Cheat Sheet
Open and edit a file
vi filename (fn=filename)
vi -r filename Recover a file from a crashed session
vi + filename Place the cursor on last line of file.
vi +n filename Place the cursor on line "n" of file.
vi +/pat filename Place cursor on line with first occurrence of "pat"tern
Close
:w Write the file to disk. Don't exit.
:w! Write the file to disk even if read/only.
:wq Write the file to disk and exit.
:wq! Write the file to disk even if read/only and quit.
:q Quit the file (only if no changes).
:q! Quite the file even if changes.
Movement
A Move to end of line, change to insert mode.
h Move 1 space backwards (back/left arrow).
j Move down 1 line (down arrow).
k Move up 1 line (up arrow).
l Move 1 space forwards (forward/right arrow)
w Move cursor to start of next word.
W Same as "w".
b Move cursor to start of previous word.
B Same as "b".
:n Go to line number "n" in the file.
Editing text
i Enter in to input mode.
o Add a line below cursor and enter in to input mode.
x Delete character (del key in some cases).
D Delete line from right of cursor to end of line.
dd Delete entire line.
u Undo last edit or restore current line.
p Put yanked text before the cursor.
yy Yank current line.
