bat 脚本编程总结备忘

来源：互联网发布：ally mac tyana磁力编辑：程序博客网时间：2024/05/16 19:03

1. 变量的定义与删除

定义变量：

set var = abc

set /a var = expression

set /p var = string

删除变量：

set var =

字符串连接：

%var%%var%

如何将命令的执行结果赋值给变量？

for /f %i in ( 'ipconfig /all ^| find /i "ipv4" ') do set yourvar=%i
for /f "tokens=*" %i in ('ipconfig /all^|find /i "ipv4" ') do set yourvar=%i
for /f "tokens=2 delims=:(" %i in ('ipconfig /all^|find /i "ipv4" ') do set yourvar=%i
for /f "delims=" %i in ( 'ipconfig /all ^| find /i "ipv4" ') do set yourvar=%i

又如，

for /f "tokens=3 delims= " %i in ('dir desktop ^|find /i "emmcboot.mbn"') do set yourvar=%i

将desktop目录下的emmcboot.mbn文件大小赋值给变量yourval

2. 截取date time 显示年月日时分

set ThisDay=%date:~0,4%%date:~5,2%%date:~8,2%
rem 获取时间
if "%time:~0,2%" lss "10" (
set ThisTime=0%time:~1,1%%time:~3,2%
) else (
set ThisTime=%time:~0,2%%time:~3,2%
)
set Now=%ThisDay%%ThisTime%

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