vi & Editors

Question 1

vi

Answer 1

vi (visual) utility is a screen-oriented text editor.

Question 2

vi

• v
• e
• E
• s
• y
• R

Answer 2

• v, Vi mode.
• e, Ex mode
• E, Improved Ex mode.
• s, Silent (batch) mode (only for Ex mode)
• y, Easy mode.
• R, Read only mode.

Question 3

vi

• Z
• m
• M
• b
• C
• N

Answer 3

• Z, Restricted mode.
• m, Modifications (writing files) not allowed.
• M, Modifications in text not allowed.
• b, Binary mode.
• C, Compatible with Vi: ‘compatible’.
• N, Not fully Vi compatible: ‘nocompatible’.

Question 4

vi

• V[N][fname]
• n
• r, -L
• r (with file name)
• T <terminal></terminal>

–not-a-term

Answer 4

• V[N][fname], Be verbose [level N] [log messages to fname]
• n, No swap file, use memory only.
• r, -L, List swap files and exit.
• r (with file name), Recover crashed session.
• T <terminal>, Set terminal type to <terminal></terminal></terminal>

–not-a-term, Skip warning for input/output not being a terminal.

Question 5

vi

–ttyfail

-u <vimrc></vimrc>

–noplugin

• p[N]
• o[N]
• O[N]

Answer 5

–ttyfail, Exit if input or output is not a terminal.

-u <vimrc>, Use <vimrc> instead of any .vimrc.</vimrc></vimrc>

–noplugin, Don’t load plugin scripts.

• p[N], Open N tab pages (default: one for each file).
• o[N], Open N windows (default: one for each file).
• O[N], Like -o but split vertically.

Question 6

vi

+

+<lnum></lnum>

–cmd <command></command></command>

• c <command></command></command>
• S <session></session>
• s <scriptin></scriptin>

Answer 6

+, Start at end of file.

+<lnum>, Start at line <lnum>.</lnum></lnum>

–cmd <command></command>, Execute <command></command> before loading any vimrc file.</command></command>

• c <command></command>, Execute <command></command> after loading the first file.</command></command>
• S <session>, Source file <session> after loading the first file.</session></session>
• s <scriptin>, Read Normal mode commands from file <scriptin>.</scriptin></scriptin>

Question 7

vi

• w <scriptout></scriptout>
• W <scriptout></scriptout>

–clean

Answer 7

• w <scriptout>, Append all typed commands to file <scriptout>.</scriptout></scriptout>
• W <scriptout>, Write all typed commands to file <scriptout></scriptout></scriptout>

–clean, ‘nocompatible’, Vim defaults, no plugins, no viminfo.

Question 8

vi [INTERNAL COMMANDS]

/

?

Answer 8

/ = Repeat previous search forward
? = Repeat previous search backward

Question 9

vi [INTERNAL COMMANDS]

h

j

k

l

Answer 9

h = Left
j = Down
k = Up
l = Right

Question 10

vi [INTERNAL COMMANDS]

i

o

a

Answer 10

i = Insert text before cursor
o = Open new line for text below cursor
a = Insert text after cursor

Question 11

vi [INTERNAL COMMANDS]

d

p

y

dd

yy

Answer 11

d = Deletes characters and lines in the direction of choice. Choices are h, j, k, l.
p = Paste buffer contents.
y = Copies(Yank) a single character after the cursor into the buffer.
dd = Deletes a current line.
yy = Copies a current line into the buffer.

Question 12

vi [INTERNAL COMMANDS]

ZZ

:w!

:q!

Answer 12

ZZ = Write the file and quit.
\:w! = Write the file overriding protection.
\:q! = Quit the file overriding protection.

Question 13

Editors

Answer 13

vi

vim

nano

emacs