Window Bat

@echo off
set /p b=please input number:
echo %b%
set /a a=2*%b%
echo %b%+%b%=%a%
pause>nul

:: please input number:2
:: 2
:: 2+2=4

move /-Y "E:\study\bash\source\e.jpg" "E:\study\bash\dest\d.jpg"

FOR %variable IN (set) DO command [command-parameters]

FOR %%variable IN (set) DO command [command-parameters]

for %%i in (1 2 3) do @echo %%i

for %%i in (java, ruby, python) do @echo %%i

set str=c d e f g h i j k l m n o p q r s t u v w x y z
for %%i in (%str%) do if exist %%i: echo %%i

for %%i in (*.bat) do echo "%%i"

:: ? 0 个或一个字符
for %%i in (???.bat) do echo "%%i"

::默认 delims 是空格
for /f %%i in (test.txt) do echo %%i
::php
::life

for /f "delims=," %%i in (test.txt) do echo %%i
::php is the best language in the world
::life is short

for /f "delims=, tokens=1-2,*" %%i in (test.txt) do echo %%i %%j %%k
::php is the best language in the world
::life is short  i use python  and you?

for /f "delims=, tokens=1-2,* eol=p" %%i in (test.txt) do echo %%i %%j %%k
::life is short  i use python  and you?

for /f "delims=, tokens=1-2,* skip=1" %%i in (test.txt) do echo %%i %%j %%k
::life is short  i use python  and you?

::遍历文件夹和子文件夹，每个文件夹后添加.
for /r E:\study\bash %%i in (.) do echo %%i
::E:\study\bash\.
::E:\study\bash\dest\.
::E:\study\bash\source\.

::遍历文件夹和子文件夹下以.txt结尾的文件，不包括文件夹
for /r E:\study\c#\bash %%i in (*.txt) do echo %%i
::E:\study\bash\test.txt
::E:\study\bash\dest\test.txt

::x、y和z都只能取整数，正负皆可，x指代起始值，y指代步长，z为终止值
for /l %%i in (1, 2, 10) do echo %%i
::1
::3
::5
::7
::9

:: d:test 路径, /b 文件名.扩展名, /o-d 时间倒序排列, o* 以 o 开头的文件
dir d:test /b /o-d o*

findstr /s /i /c:"cmd" C:\tmp\*.txt

echo hello world computer|findstr "\<computer\>"
echo hello worldcomputer|findstr ".*computer\>"

:: 以 @ 和 空格分割
:: test*.txt 模式匹配，匹配会包含文件名
:: test.txt:php 123
for /f "tokens=1,2 delims==@ " %%i in ('findstr /c:"@" test*.txt') do (
    echo %%i %%j
)

:: test.txt 完整匹配，匹配不会包含文件名
:: php 123
for /f "tokens=1,2 delims==@ " %%i in ('findstr /c:"@" test.txt') do (
    echo %%i %%j
)

:: 只以 @ 分割
:: php 123 the best language in the world
for /f "tokens=1,2 delims==@" %%i in ('findstr /c:"@" test.txt') do (
    echo %%i %%j
)


REM 以 t, h, e, th ... the 分割
REM p
REM p @123
REM  b
REM s
REM  languag
for /f "tokens=1,2,3,4,5 delims==the" %%i in ('findstr /c:"@" test.txt') do (
    echo %%i
    echo %%j
    echo %%k
    echo %%l
    echo %%m
）

@echo off
set a=4
set a=5&echo %a%
pause
:: 4

@echo off
setlocal enabledelayedexpansion
set a=4
set a=5&echo !a!
pause
::5

@echo off&setlocal enabledelayedexpansion
for /l %%i in (1, 2, 5) do (
    set "a=%%i"
    echo !a!
)
pause>nul
:: 1
:: 3
:: 5

@echo off
for /l %%i in (1,2,5) do (
    set "a=%%i"
    echo %a%
)
pause>nul
:: ECHO 处于关闭状态。
:: ECHO 处于关闭状态。
:: ECHO 处于关闭状态。

:: 将 .txt 文件中的 aa 替换为 bb
@echo off&&setlocal enabledelayedexpansion
for %%i in (*.txt) do (
    set original=%%i
    set replaced=!original:aa=bb!
    if !original! neq !replaced! (ren "!original!" "!replaced!")
)
endlocal

:: 将 .txt 文件重命名为 .bat
:: delims=表示不使用默认空格分隔，避免处理带空格文件时错误
:: /s 对当前目录及其子目录中所有文件进行列表
@echo off
for /f "tokens=* delims=" %%i in ('dir /b/s *.txt') do (
    rename "%%i" "*.bat"
)
:: 可以直接使用 rename 当前目录文件
ren *.txt *.bat

:: 替换 # 为换行
:: start tmp.txt 打开 tmp.txt
:: goto :eof 跳到 for 循环中继续执行
:: %~1 扩充 %1 删除引号(")
@echo off>tmp.txt
for /f "delims=" %%i in (a.txt) do (
set "s=%%i"
call set "s=%%s:#=&echo.%%"
call call :write "echo.%%s%%"
)
start tmp.txt
exit
:write
(%~1)>>tmp.txt
goto :eof

copy a b || echo copy error %ERRORLEVEL% >> test.log

echo off
echo %date% %time%
echo %date:~0,10% %time:~0,8%
:: 2018/12/21 周五 16:28:54.34
:: 2018/12/21 16:28:54

C:\Users\11435>rd/?
删除一个目录。

RMDIR [/S] [/Q] [drive:]path
RD [/S] [/Q] [drive:]path

    /S      除目录本身外，还将删除指定目录下的所有子目录和
            文件。用于删除目录树。

    /Q      安静模式，带 /S 删除目录树时不要求确认