[系统运维].bat 文件dos comand 批处理学习

@echo off
::color 1

rem echo usege
echo hello word!
echo.off
echo.
echo.on

rem set 用法
set ver=abc
echo %ver% 
::reset the ver
set ver=  

set ver_1=def 
set ver_2=%ver%
echo %ver_1% 
 
::set /a 数值表达式
set /a a1=1,a2=2
set /a res=a1 + a2
echo res=%res% 

set /a result=%res% 
echo result=%a1%+%a2%=%result%

if  %a1%==%a2% (
	echo a1 is equal to a2
) else (
	echo a1 is not equal to a2 
)

if %errorlevel%==0 (
echo success!
) else (
echo failed!
)


if errorlevel 1 (
echo success 1 !
) else (
echo failed 1 !
)

if exist C:\meng_F\DOCmdStudy\test.txt (
echo file is find
del C:\meng_F\DOCmdStudy\test.txt
) else (
echo file is not find !
)

if defined a1 (
echo a1 have define 
) else (
echo a1 no define 
)

::set /p 变量名=值  等号不要加空格
::set /p info=input:
::echo your input info : %info%


::/I distinguish the A and a
set test1=123
set test2=abc
set test3=12
if /I %test2% equ ABC (
	if %test1% geq %test3% (
		echo %test1%^>=%test3%
	) else (
		echo test1^<test3
	)
) else (
	echo %test2% not equal ABC!
)

::set local enableDelayExpansion
echo eg_1
set local_test=apple 
if %local_test%==apple (
	set local_test=orange
	if %local_test%==orange (
		echo reset veriable  successful [%local_test%]
	) else (
		echo reset veriable failed [%local_test%]
	)
)
echo %local_test%

echo eg_2
setlocal enableDelayedExpansion 
set local_test_1=apple1 
if %local_test_1%==apple1 (
	set local_test_1=orange1
	if "!local_test_1!" == "orange1" (
		echo reset successful [!local_test_1!]
	) else (
		echo reset failed [!local_test_1!]
	)
)
echo %local_test_1%
endlocal



::for
echo eg_1
for %%i in (1,3,5,7) do echo %%i

echo eg_2
for %%i in (1,*) do (
  echo %%i
)

echo eg_3
cd C:\meng_F\DOCmdStudy
echo file:
for %%f in (*) do (
	echo %%f
)
echo folder:
for /d %%d in (*) do (
	echo %%d
)

echo eg_4
echo file:
for /r C:\meng_F\DOCmdStudy %%f in (*) do (
	echo %%f
)
echo folder:
for /d /r C:\meng_F\DOCmdStudy %%d in (*) do (
	echo %%d
)












rem 设置标题的内容
title nick test


pause > nul