Shulou(Shulou.com)06/02 Report--

Command 1 Function Remarks REM comment prompt can be echoed, can be turned off by @echo:: comment, can not echo valid label: colon followed by a string beginning with an alphanumeric character, goto statement can be recognized. Invalid label: A special symbol followed by a colon that is not alphanumeric. A label that goto cannot recognize. It can be used as a comment. Therefore:: is often used as a comment symbol. In fact,:+ can also be used as a comment. echo turns on or off echo function. To turn off echo off itself, add @, to turn off echo of the command, regardless of whether echo is turned on or not. echo. Output a space is equivalent to a carriage return, you can use,:;"/[]+ and other symbols instead of echo file content> file name echo file content>> file name The first is to overwrite, the second is to add pause to stop the execution of system commands, and display the following content to display custom prompts: echo Other prompts & pause > nulset definition variable set var=10 ::= No spaces on either side of the sign set definition variable set var= :: Assign variable is a definition variable, do not assign variable value similar to canceling variable SET /a expression Let SET support mathematical symbols for addition and subtraction and other mathematical operations SET /p var=[promptString] Wait for user input Set will display all current system environment variables; set c displays all current variables starting with c or C (case-insensitive)errorlevel program return code returns 0 successfully, fails 1title sets cmd's title color [attr] sets default console foreground and background colors Specify color attributes for console output

Color attributes are specified by two hexadecimal numbers-the first for background and the second for foreground. Each number can have any of the following values:

0 = black 8 = grey

1 = blue 9 = light blue

2 = Green A = Light Green//Case-insensitive

3 = Lake Blue B = Light Green

4 = red C = reddish

5 = Purple D = Lavender

6 = ××× E = Light ×××

7 = white F = bright white

For example: fc color

If no arguments are given, the command reverts the color to the color CMD.EXE started with. This value comes from the current console window, the/T switch, or the DefaultColor registry value. If the color command is executed with the same foreground and background colors, the color command sets the errorlevel to 1

goto jump to label goto label-- : label start opens a new window to run the program If the new window does not exit properly, your batch will not execute properly The call command can call another batch during batch execution When another batch is finished, continue with the original batch %npushd Save the current directory first, and set the specified directory as the current directory popd Make the directory where pushd was last called the current directory

Multi-selection function

set /p choice= Please select:

if /i "%choice%"=="1" goto ip

if /i "%choice%"=="2" goto setsave

if /i "%choice%"=="3" goto kaiji

if /i "%choice%"=="4" goto clean

if /i "%choice%"=="Q" goto endd

The main benefit of taskkill is that it has many filters and can end processes in batches.

/f Forced end of process

/pid process id Specifies the PID of the process to terminate.

Common special symbols

1.@ command line echo mask

2, % Batch variable pilot

3.> Redirects

4.>> Redirects

5、&、

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