Little VI experience

Edit:
Move the next row to the end of the current row. In Windows, it is very simple-press del at the end of the current row or BS at the beginning of the next row,
In Vi, you need to pressJ(Uppercase J, that is, Shift + J)

Saved quick launch:
Many people are used to the standard: WQ! Save and exit, but I prefer to press SHIFT + Z, that is, ZZ.

Search:
/Sometext find from the current back
? Sometext looks forward from the current time (after the two commands are executed, press n to continue searching backward and then press n to continue searching forward)
: G/sometext/

The former is directly located on the word, and the latter is only located on that line.

 

Ex command extension:

In VI, there is an ex command mode that can be used to quickly edit operations. The basic mode is:

[Range] G [lobal]/mode/[ex command] in the specified"Range", Matching"Mode"To execute"Ex command"

[Range] V [lobal]/mode/[ex command] in the specified"Range"InternalNoMatch"Mode"To execute"Ex command"

• If "range" is not specified, the default value is all.
• If the "ex command" is not specified, the result is displayed by default.
• "Mode" is a regular expression.

In terms of editing the "ex command", there are roughly M (mobile) S (replace) D (delete)

Example:

: G/^/M0 moves each row from the first line to the first line. The result is that all rows are reversed in reverse order.

: G/127.0.0.1/S/HTTP/FTP/g for lines containing 127.0.0.1, replace HTTP with FTP

: G/127.0.0.1/S/^/\ t/g. Add a tab before each line to the row containing 127.0.0.1)

: G/127.0.0.1/d Delete rows containing 127.0.0.1

 

If the command content contains/characters, you can select escape \/or change the command separator/of ex to another character (for example ~ @ # $ % ).For example, to delete/Simon from a row containing/home:

: G/\/home/S/\/Simon/g Escape Character Input/

: G #/home # s #/Simon # G use # As the command separator, then the character/can be used directly

 

Search-replace:
Normally, the replacement ex command is
: % S/oldtext/newtext/g

The following is an explanation of this command
: Indicates entering the command mode of ex.
% Indicates the source of the ex commandRange.The following commands are executed in this range. There are multiple expressions in this range:
% Indicates full text
$ Indicates the end of the row.
. Indicates the current row
X, Y indicates from row X to row y, for example, 10, 20 s/oldtext/newtext/
In addition, you can use other ex search commands to express the range.
G/sometext/indicates the row containing sometext

S is exReplaceCommand
/.../Indicates the content of "search-Replace.
G indicatesReplace allBy default, only one execution is performed in seconds.

-= Example 1 =-
: 10th S/^ // Add four spaces in front of rows to 20
Can be divided into: 10, 20 s/^ //

-= Example 2 =-
: G/small/S/^/#/Add comments to all rows that contain small #
G/small/find rows containing small
/^/Indicates the first non-blank character
It can be divided into g/small/S/^ /#/