Multiple annotation methods in batch processing

In some cases, we need to use a large segment of comments in batches, that is, more than 2 lines of consecutive comments. So, how do you achieve him?

There are a number of ways to do this, and this article only lists some of them.

㈠, using REM

Note: You cannot use redirects and pipe breaks in comments;

When Echo is on, the REM command and comment content will be displayed;

There are spaces between REM and annotations.

Example:

REM Note Content 1 REM Note Content 2 REM Note Content 3

㈡, using::

Windows XP can recognize a colon (:) The batch program line that starts as a label and does not process it as a command. If a line starts with a colon, any command for that row is ignored.

Example:

:: note Content 1 :: Note Content 2 :: note Content 3

㈢, using echo >nul

Note: You cannot use redirects and pipe breaks in comments;

There is a space between the Echo and the comment.

Example:

Echo Comment Content 1>nul Echo Comment Content 2>nul Echo Comment Content 3>nul

㈣, using goto

Note: You cannot use goto-pointing labels in comments

Example:

Goto Han Note Content 1 Note Content 2 Note Content 3 : Han

㈤, using: Notes

Note: the first character in the note cannot be a number or a letter;

Example:

: note Content 1 : Note Content 2 : note Content 3

Description: in actual use, for example tag: STSRT, we can also think of him as a comment. The following example:

:: Argparse.bat-parser of command line arguments :: Would sort-2005-11-26-winxp_cmd/msdos7.10/msdos6.22 @echo off : Init For%%e in (directory_i directory_o filter_f filter_v log) do set%%e= :P Arseloop If "%1" = = "" Goto Start For%%s in (I-f f v l o O) do if "%1" = = "/%%s" gotoswitch%%s echo error:invalid switch '%1 '! Goto Quit : Switchi If "%directory_i%" = = "" Set directory_i=%2 Goto Nextarg : Switcho If "%directory_o%" = = "" Set directory_o=%2 Goto Nextarg : SWITCHF If "%filter_f%" = = "" Set filter_f=%2 Goto Nextarg : SWITCHV If "%filter_v%" = = "" Set filter_v=%2 Goto Nextarg : Switchl If "%log%" = = "" Set log=%2 Goto Nextarg : Nextarg Shift Shift Goto Parseloop : Start Echo.directory_i%directory_i% Echo.directory_o%directory_o% Echo.filter_f%filter_f% Echo.filter_v%filter_v% Echo.log%log% : Quit For%%e in (directory_i directory_o filter_f filter_v log) do set%%e= : End

㈥, using: Label annotations

Example:

: Han Note: The following code ... Command 1 Command 2

㈦, using if not exist nul comment

Note: You cannot use redirects and pipe breaks in comments;

There should be a space between the if not exist nul and the comment.

Example:

If not exist nul note content 1 If not exist nul note content 2 If not exist nul note content 3

Multiple annotation methods in batch processing