BAT Command Daquan

BAT Command Daquan

1 Echo and @

@ #关闭单行回显

echo off #从下一行开始关闭回显

@echo off #从本行开始关闭回显. General batch The first line is this.

echo on #从下一行开始打开回显

Echo #显示当前是 echo off state or echo on state

Echo. #输出一个 "Carriage return", Blank line

# (with Echo, echo; echo+ echo[Echo] echo/echo\)

2 ERRORLEVEL

Echo%errorlevel%

Each command runs to the end, you can view the return code in this command line format

The default value is 0, and General Command execution errors are set to ERRORLEVEL to 1

3 dir

Dir #显示当前目录中的文件和子目录

dir/a #显示当前目录中的文件和子目录, including hidden files and system files

Dir c:/a:d #显示 C-Disk directory in the current directory

Dir c:/a:-d #显示 C files in the packing directory

Dir c \/b/p #/b only displays the file name,/p pagination display

Dir *.exe/s #显示当前目录和子目录里所有的. exe files

4 CD

Cd\ #进入根目录

CD #显示当前目录

CD/D D:\SDK #可以同时更改盘符和目录

5 MD

MD d:\a\b\c #如果 d:\a not present, intermediate directories will be created automatically

#如果命令扩展名被停用, you need to type mkdir \a\b\c.

6 Rd

RD ABC #删除当前目录里的 ABC subdirectory, requires an empty directory

rd/s/q d:\temp #删除 d:\temp folder and its subfolders and files,/q Quiet mode

7 del

Del D:\test.txt #删除指定文件, cannot be a hidden, system, read-only file

del/q/a/f d:\temp\*.* #删除 All files in the D:\temp folder, including hidden, read-only, system files, not including subdirectories

del/q/a/f/s d:\temp\*.* #删除 All files in d:\temp and subfolders, including hidden, read-only, system files, not including subdirectories

8 Ren

ren d:\temp tmp #支持对文件夹的重命名

9 CLS

Clear Screen

Ten type

Show file contents

Type C:\Boot.ini #显示指定文件的内容, program files will generally show garbled

Type *.txt #显示当前目录里所有. txt file contents

Copy

Copy files

Copy C:\test.txt D:\test.bak

Copy c:\test.txt file to D:\ and rename to Test.bak

Copy con test.txt

Wait for input from the screen, press CTRL + Z to end the input, save the input as a test.txt file

Con represents the screen, PRN represents the printer, NUL represents the empty device

Copy 1.txt + 2.txt 3.txt

Merge 1.txt and 2.txt content, save as 3.txt file

If you do not specify 3.txt, save to 1.txt

Copy Test.txt +

Copy files to yourself and actually modify the file date

Title

Set the title of the cmd window

Title New Headline #可以看到cmd窗口的标题栏变了

Ver

Show System version

Label and vol

Set the volume label

Vol. #显示卷标

Label #显示卷标 and prompt for new volume label

Label C:system #设置C盘的卷标为 System

Pause

Pause command

REM and::

Comment Commands

Comment lines do not perform actions

Date and time

Date and time

Date #显示当前日期 and prompt for a new date, press \ "Enter \" to skip the input

date/t #只显示当前日期, do not prompt to enter a new date

Time #显示当前时间, and prompt for new times, press \ "Enter \" to skip input

time/t #只显示当前时间, do not prompt to enter a new time

Goto and:

Jump command

: Label #行首为: Indicates that the row is a label row, and the label row does not perform an action

Goto Label #跳转到指定的标签那一行

Find (External command)

Find command

Find \ "Abc\" C:\test.txt

Find lines with an ABC string in the C:\test.txt file

If not found, the ERRORLEVEL return code is set to 1

find/i "ABC" C:\test.txt

Find rows with ABC, ignoring case

FIND/C \ "Abc\" C:\test.txt

Displays the number of rows with ABC

More (External command)

Per-screen display

More C:\test.txt #逐屏显示 c:\test.txt file contents

Tree

Show directory Structure

Tree D:\ #显示D盘的文件目录结构

&

Executes multiple commands sequentially, regardless of whether or not the command is executed successfully

&&

Executes multiple commands sequentially and does not execute subsequent commands when a command that performs an error is encountered

Find \ "Ok\" C:\test.txt && Echo Success

If the word "ok\" is found, it displays \ "Success \" and does not appear if it is not found.

24 | |

Executes multiple commands sequentially and does not execute subsequent commands when the correct command is run

Find \ "Ok\" C:\test.txt | | Echo Not successful

If the word "ok\" is not found, it will display \ "unsuccessful \" and it will not be displayed

25 |

Pipeline command

Dir * */s/a | FIND/C \ ". exe\"

The pipe command indicates that the DIR command is executed first, and the result of its output executes the following find command

The command line results: output the number of. exe files in the current folder and all subfolders

Type C:\test.txt|more

The effect of this and more c:\test.txt is the same

> >>

Output REDIRECT Command

> Erase the contents of the file before writing

>> append content to the end of the file without erasing the original content

Output the content that would otherwise appear on the screen to the specified file

Specifies that the file is automatically generated if it does not exist

Type C:\test.txt >PRN

File contents are not displayed on the screen, turn output to printer

echo Hello World>con

The Hello world is displayed on the screen, and virtually all output is the default >con

Copy c:\test.txt F: >nul

Copy the file and do not display \ "File copy succeeded \" message, but if the F drive does not exist, an error message will be displayed

Copy c:\test.txt f: >nul 2>nul

Does not display the "File copy succeeded" message, and the F disk does not exist, also does not display the error message echo ^^ W ^> ^w>c:\test.txt

The resulting file content is ^w > W

^ and > are control commands, to output them to a file, you must add a ^ symbol in front

<

Get input from a file, not from the screen

Commands that are typically used for a date time label, such as waiting to be entered

@echo off

Echo 2005-05-01>temp.txt

Date <temp.txt

Del Temp.txt

This allows you to modify the current date without waiting for input

28%0%1%2%3%4%5%6%7%8%9%*

Parameters passed to the batch by the command line

%0 The batch file itself

The first parameter of%1

%9 nineth parameter

%* all parameters starting from the first argument

The substitution of the batch parameter (%n) has been enhanced. You can use the following syntax:

%~1-delete quotation marks (\ "), expand%1

%~F1-Expanded%1 to a fully qualified pathname

%~D1-expand%1 to only one drive letter

%~P1-expand%1 to only one path

%~N1-expands%1 to a file name only

%~X1-Expanded%1 to only one file name extension

%~S1-extended path refers to a short name

%~A1-Extend%1 to file properties

%~T1-date/time when%1 was expanded to a file

%~Z1-Expansion of%1 to file size

%~ $PATH: 1-finds the directory that is listed in the PATH environment variable and adds%1

Expands to the first fully qualified name found. If the environment

The variable name is not defined, or the file is not found, this key combination will

Extend to an empty string

Modifier can be combined to achieve multiple results:

%~DP1-Extend%1 to drive letter and path only

%~NX1-Extension%1 to file name and extension only

%~dp$path:1-Look for% 1 in the directory listed in the PATH environment variable

and expands to the drive letter and path of the first file found.

%~FTZA1-Extended%1 to an output line similar to DIR.

Can you refer to call/? or for/? See the meaning of each parameter

echo load \ "%%1\" \ "%%2\" >c:\test.txt

The resulting file content is load \ "%1\" \ "%2\"

Batch file, use this format to output command line arguments to a file

If

Judging commands

If \ "%1\" ==\ "/a\" echo the first parameter is a/a

if/i \ "%1\" equ \ "/a\" echo the first parameter is/a

/I means case insensitive, equ and = = are the same, other operators see if/?

If exist C:\test.bat echo exists C:\test.bat file

If not exist C:\Windows (

Echo does not exist C:\Windows folder

)

If exist C:\test.bat (Echo exists c:\test.bat) Else (Echo does not exist C:\test.bat)

Setlocal and Endlocal

Setting command extensions and delaying environment variable expansion

SETLOCAL enableextensions #启用 \ "command extension \"

SETLOCAL disableextensions #停用 \ "command extension \"

SETLOCAL enabledelayedexpansion #启用 \ "Delay environment variable expansion \"

SETLOCAL disabledelayedexpansion #停用 \ "Delay environment variable expansion \"

Endlocal #恢复到使用SETLOCAL语句以前的状态

Command extension is enabled by default

"Delay environment variable expansion" is disabled by default

The system automatically restores the default value after the batch process ends

You can modify the registry to disable \ "command extension \", see CMD/?. So the use of the \ "command extension \" process

SETLOCAL Enableextensions and Endlocal statements at the beginning and the end to ensure

The program can operate correctly on other systems

\ "Delay environment variable expansion \" is mainly used for if and for the compliance statement, in the description of the set is actually a use case process

Set

Setting variables

Reference variables can be added before and after the variable name, i.e.% variable name%

Set #显示目前所有可用的变量, including system variables and custom variables

Echo%systemdrive% #显示系统盘盘符. System variables can be referenced directly

Set P #显示所有以p开头的变量, if not a errorlevel=1

Set P=aa1bb1aa2bb2 #设置变量p, and assigns a value = the string after it, i.e. AA1BB1AA2BB2

echo%p% #显示变量p代表的字符串, i.e. AA1BB1AA2BB2

echo%p:~6% #显示变量p中第6个字符以后的所有字符, i.e. AA2BB2

echo%p:~6,3% #显示第6个字符以后的3个字符, i.e. AA2

echo%p:~0,3% #显示前3个字符, i.e. Aa1

echo%p:~-2% #显示最后面的2个字符, i.e. B2

echo%p:~0,-2% #显示除了最后2个字符以外的其它字符, i.e. aa1bb1aa2b

Echo%p:aa=c% #用c替换变量p中所有的aa, which shows C1BB1C2BB2

Echo%p:aa=% #将变量p中的所有aa字符串置换为空, which shows 1BB12BB2

Echo%p:*bb=c% #第一个bb及其之前的所有字符被替换为c, which shows C1AA2BB2

Set p=%p:*bb=c% #设置变量p, assigned to%p:*bb=c%, i.e. C1AA2BB2

set/a p=39 #设置p为数值型变量 with a value of 39

set/a P=39/10 #支持运算符, there are decimals with the tail method, 39/10=3.9, to the tail 3,p=3

set/a P=P/10 #用/A parameter, the variable after = can be directly referenced without a%

set/a p= "1&0″#" and "operation, add quotation marks." Other supported operators see set/?

Set p= #取消p变量

set/p p= Please enter

"Please enter" is displayed on the screen, and the input string is assigned to the variable p

Note that this can be used to replace the choice command.

Note that the variable is replaced in the compound statement of the IF and for all at once, as

@echo off

Set P=AAA

If%P%==AAA (

Echo%p%

Set P=BBB

Echo%p%

)

The results are displayed

Aaa

Aaa

Because all%p% are replaced with AAA when the IF statement is read

Here's \ "replace \", IN/? Help means \ "expand \", \ "Environment variable expansion \"

can enable "Delay environment variable expansion", with! To reference a variable, that is! variable name!

@echo off

SETLOCAL enabledelayedexpansion

Set P=AAA

If%P%==AAA (

Echo%p%

Set P=BBB

Echo!p!

)

Endlocal

The results are displayed

Aaa

Bbb

There are also several dynamic variables that run the set and cannot see

%cd% #代表当前目录的字符串

%date% #当前日期

%time% #当前时间

%random% #随机整数, between 0~32767

%errorlevel% #当前 ERRORLEVEL Value

%cmdextversion% #当前命令处理器扩展名版本号

%cmdcmdline% #调用命令处理器的原始命令行

You can use the echo command to view each variable value, such as Echo%time%

Note that the%time% is accurate to milliseconds and can be used when batch processing requires deferred processing

Start

commands from external programs are called in batches, otherwise the remaining instructions are not executed until the external program finishes

Call

Another batch command is called in the batch, otherwise the remaining batch instructions will not be executed

Sometimes some applications use start to invoke an error or call

Choice (external command)

Select command

Let the user enter a character, thus choosing to run different commands, return code ERRORLEVEL is 1234 ...

Win98 is choice.com.

Win2000pro, you can cuff it from the Win98.

Win2003 is Choice.exe.

choice/n/C y/t 5/d Y>nul

5 Seconds delay

Assoc and Ftype

File associations

Assoc Set ' File name extension ' Association to ' file type '

Ftype set ' file Type ' association to ' execute program and Parameters '

When you double-click a. txt file, Windows is not directly judged by the. txt to open with Notepad.exe

Instead, you first determine that. txt belongs to txtfile ' file type '

Call the txtfile associated command-line Txtfile=%systemroot%\system32\notepad again. EXE%1

You can modify these 2 associations in the \ "Folder Options \" →\ "File type \"

Assoc #显示所有 ' File Extension ' Association

Assoc. txt #显示. txt represents the ' file type ' and results are displayed. Txt=txtfile

Assoc. Doc #显示. doc represents the ' file type ', and the results are displayed. Doc=word.document.8

Assoc. exe #显示. exe represents the ' file type ' and results are displayed. Exe=exefile

Ftype #显示所有 ' File Type ' association

Ftype Exefile #显示exefile类型关联的命令行, results show exefile=\ "%1\"%*

Assoc. txt=word.document.8

You can see that the icon for a. txt file changes when you set the. txt to a Word type document.

Assoc. txt=txtfile

Restoring the correct association of. txt

Ftype exefile=\ "%1\"%*

Restore the correct association of Exefile

If the association has been corrupted, you can run Command.com, and then enter this command

Pushd and POPD

Toggle current Directory

@echo off

C: & cd\ & MD mp3 #在 \ C Create a MP3 folder

MD d:\mp4 #在 D:\ Create a MP4 folder

cd/d D:\mp4 #更改当前目录为 D:\mp4

pushd C:\mp3 #保存当前目录, and switch the current directory to C:\mp3

POPD #恢复当前目录为刚才保存的 D:\mp4

PNS for

Looping commands

This is more complicated, please control for/? View

For%%i in (c:d: e:f:) do echo%%i

Call each string in parentheses, and execute the command following the Do

Note%%i that the FOR statement call parameter in a batch is 2%

The default string delimiter is \ "SPACEBAR \", \ "tab \", \ "enter key \"

For%%i in (*.txt) do find \ "Abc\"%%i

Execute the Find command for all txt files in the current directory

For/r. %%i in (*.txt) do find \ "Abc\"%%i

Searches all. txt files in the current directory and subdirectories for lines containing the ABC string

For/r. %%i in (.) Do echo%%~PNI

Displays the current directory name and all subdirectory names, including the path, not including the drive letter

FOR/R D:\mp3%%i in (*.mp3) do echo%%i>>d:\mp3.txt

Save the filename of the mp3 file in the D:\mp3 and its subdirectories in D:\mp3.txt.

FOR/L%%i in (2,1,8) do echo%%i

Generate 2345678 of a string of numbers, 2 is the beginning of the sequence of numbers, 8 is the end, 1 means that each add 1

for/f%%i in (' Set ') do echo%%i

Loop calls to the output of the set command, one per line

for/f \ "Eol=p\"%%i in (' Set ') do echo%%i

Take the output of the set command, ignoring the lines that begin with P

for/f%%i in (d:\mp3.txt) do echo%%i

Displays each file name in the D:\mp3.txt, one per line, and does not support names with spaces

for/f \ "Delims=\"%%i in (d:\mp3.txt) do echo%%i

Displays each file name in the D:\mp3.txt, one per line, supporting names with spaces

for/f \ "Skip=5 tokens=4\"%%a in (' dir ') do echo%%a

For the result of the dir command, skip the previous 5 lines, and the remaining rows take the 4th column

The delimiter between each column is the default \ "Space \"

Note that the first 5 lines of the dir command output do not have a file name

for/f \ "tokens=1,2,3 delims=-\"%%a in (' date/t ') do (

Echo%%a

Echo%%b

Echo%%c

)

1, 2, 3 columns per row for the output of the date/t

The first column corresponds to the specified%%a, and the subsequent%%b and%%c are derived, corresponding to the other columns

The delimiter is specified as-and \ "Space \", note that there is a \ "space \" behind delims=-

where tokens=1,2,3 Replace with tokens=1-3, the effect is the same

for/f \ "tokens=2* delims=-\"%%a in (' date/t ') do echo%%b

Take the 2nd column to%%a, and the subsequent columns to%%b

Subst (external command)

Mapped disks.

Subst Z: \server\d #这样输入z: You can access \server\d.

Subst Z:/d #取消该映射

Subst #显示目前所有的映时

* xcopy (External command)

File copy

xcopy D:\mp3 e:\mp3/s/e/i/y

Copy the D:\mp3 folder, all subfolders, and files to E:\, overwriting existing files

Plus/I indicates if e:\ Create a new one automatically without the MP3 folder, or you will be asked

BAT Command Daquan