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Table Of Contents  CertiGuide to A+ (A+ 4 Real)
 9  Chapter 5: The Linux Operating System
      9  Basic Concepts and Procedures for Creating, Viewing and Editing Files and Directories
           9  Common Commands

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jobs - List Jobs that are Running from the Current Shell
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vi - A Full Screen Text Editor
(Page 2 of 4)

Modes and Commands



vi has two basic modes: the command mode and the insert mode. vi normally starts in command mode and command mode can always be reached by pressing the escape key (hereafter shown as <esc> ). Most experienced vi users will be seen frequently pressing the escape key (their security blanket to be certain they are in command mode).

Table 16 summarizes the basic command structures, screen navigation commands, and editing commands available in vi.


Table 16: Common vi Editor Commands

Command

Function

ZZ, :wq

Save and Exit.

:q!

Exit without Save

DownArrow

Forward one line (or N lines).

UpArrow

Backward one line (or N lines).

RightArrow

Move right one character

LeftArrow

Move left one character

i

Start insert under the cursor

a

Start insert immediately after the cursor

o

Insert empty line below cursor and start insert at beginning of line

O

Insert empty line above cursor and start insert at beginning of line

/pattern

Search forward for next word matching pattern.

?pattern

Search backward for next word matching pattern.

n

Repeat previous search

N

Repeat previous search in reverse direction.

x

Delete character under cursor

dd

Delete current line

dw

Delete current word

db

Delete previous word

d/pattern

Delete from cursor to next word matching pattern


Command Structure

Basic command structure:

[rep-count] command [span of control]

Breaking this down: rep-count gives the number of times the command is to be repeated and the span of control modifies the amount of the editor buffer that the command will affect. For example with the delete command, the span of control can cause the next word, the next line, or the rest of the file to be deleted.


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