::切换到D盘
D:

::切换到当前目录下“hello”文件夹
cd hello

::切换到上一层目录
cd..

::列出当前目录下面的文件夹和文件信息
dir

::当前目录下建立“hello”文件夹
md hello

::当前目录下删除“hello”文件夹
rd hello

::当前目录下“hello”文件夹重命名为“hello_world”
rename hello hello_world

::复制当前文件夹下“123.txt”到“hello”文件夹
copy 123.txt hello\

::移动当前目录jpg文件到E盘根目录
move *.jpg E:\

::移动当前目录“123.txt”到“hello”文件夹并改名为“456.txt”
move 123.txt hello\456.txt

::删除当前目录以“abc”开头的txt文件
del abc*.txt

::删除当前目录文件名匹配三个字符的txt文件
del ???.txt

::文件改名，当前目录“123.txt”改为“456.txt”
rename 123.txt 456.txt

::写法一
md 2021
move 2021*.jpg 2021

::写法二
md 2022
md 2023
move 2022*.jpg 2022
move 2023*.jpg 2023

goto start

line1

line2

line3

:start

echo Hello World

:: 输出到file.txt
echo Hello World >file.txt

:: 将标准输出到file.txt
echo Hello World 1>file.txt

:: 将错误输出到file.txt
echo Hello World 2>file.txt

:: 追加到file.txt
echo Hello World >>file.txt

:: 输出到file.txt
echo Hello World >file.txt
:: 将标准输出到file.txt
echo Hello World 1>file.txt

:: 追加到file.txt
echo Hello World >>file.txt
:: 追加到file.txt
echo Hello World 1>>file.txt

:: 输出到file.txt
bilibili.exe 2>file.err

:: 输出到file.txt
bilibili.exe 2>>file.err

echo Hello World 1>file.txt
1>>file.txt bilibili.exe 2>&1

Hello World 
'bilibili.exe' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

echo 2>file.err Hello World 1>&2
bilibili.exe 2>>file.err

 Hello World 
'bilibili.exe' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

echo Hello World >nul 

@echo off
echo Hello World
bilibili.exe
pause

@echo off & setlocal enabledelayedexpansion

rem ===================需手动设置===================
rem 设定片头片尾长度，格式为 HH:mm:ss.fff
set "s1=00:00:07.0"
set "s2=00:00:00.0"
rem ================================================

for /f "tokens=1-4delims=:." %%a in ("%s2%") do (
    set /a "t2=(1%%a %% 100 *3600 + 1%%b %% 100 * 60 + 1%%c %% 100) * 1000 + 1%%d %% 1000"
)

md myvideo 2>nul
for %%i in (*.avi *.mkv *.mp4 *.flv) do (
    for /f "tokens=2-5delims=:., " %%a in ('ffmpeg -i "%%i" 2^>^&1 ^| find "Duration:"') do (
        set /a "t=(1%%a%%100*3600+1%%b%%100*60+1%%c%%100)*1000+1%%d0%%1000,t-=t2,ms=t%%1000,t/=1000"
        set /a h=t/3600,m=t%%3600/60,s=t%%60,h+=100,m+=100,s+=100,ms+=1000
        set "t=!h:~1!:!m:~1!:!s:~1!.!ms:~1!"
        ffmpeg -ss !s1! -to !t! -accurate_seek -i "%%i"  -c copy -avoid_negative_ts 1 "myvideo\%%i" -y
    )
)
pause

ren *.tmp *.7z
ren *.tar删 *.tar
ren *.7删除z *.7z
ren *.7删字z *.7z
ren *.7z删除 *.7z
ren *.7z删字 *.7z
ren *.7z删掉文字 *.7z
ren *.7删掉文字z *.7z
ren *.7删除文字z *.7z
ren *.7z删掉文字 *.7z
ren *.7z删除文字 *.7z
ren *.rar删除文字 *.rar
ren *.rar（副本） *.rar
ren *.jpg *.rar
ren *.bc! *.
ren *. *.rar

@Echo Off
SetLocal

:begin

echo:
echo ****** 禁止文件夹联网 ******
echo:

set /p folder=请输入文件夹（退出请直接关闭窗口）： 
If Not Exist "%folder%\" Exit/B
If /I "%CD%" NEq "%folder%" PushD %folder%
Set "Cmnd=netsh advfirewall firewall add rule action=block"
echo:
For /R %%a In (*.exe) Do (For %%b In (in out) Do (
      echo 创建禁止 %%b 规则【%%a】
      %Cmnd% name="blocked %%a via script" dir=%%b program="%%a"))

echo:
echo 搞定了，%folder% 中所有 exe 文件的禁止入站、出站规则都已成功创建！
echo ----------------------------
echo:

goto begin

start snippingtool 

@echo offstart https://www.baidu.com/

@echo offstart https://www.zhihu.com/start https://www.bilibili.com/start https://chat.openai.com/

@echo offdir /b /a-d > filelist.txt

@echo offdir /b /s /a-d > filelist.txt

@echo offfor /r %%i in (*) do (if "%%~dpi" neq "%cd%\" (        move "%%i" "%cd%"    ))