bat 如何插入换行符

chenkuan9yy

setlocal enabledelayedexpansion
set file=d:\my.ini
set "file=%file:"=%"
for %%i in ("%file%") do set file=%%~fi
echo.
set replaced=[mysqld]
echo.
set all="[mysqld] lower_case_table_names = 2"

for /f " tokens=1 delims=" %%i in ('type "%file%"') do (
    set str=%%i
    set "str=!str:%replaced%=%all%!"
        REM set str=!str: =^       
    echo !str!>>"%file%"_tmp.txt
)

my.ini 文件内容是这样的
[mysqld]
lower_case_table_names = 1

我想替换好后变成这样
[mysqld]
lower_case_table_names = 2

但是现在是这样的
[mysqld]  lower_case_table_names = 1
请问怎么 替换后能换行

WHY

1. @echo off
   
2. setlocal enabledelayedexpansion
   
3. for /f "delims=" %%i in (my.ini) do (
   
4.     if "!s!" == "[mysqld]" (
   
5.         set "s1=%%i"
   
6.         if /i "!s1:~0,22!" == "lower_case_table_names" (
   
7.             echo;lower_case_table_names = 2
   
8.         )
   
9.     ) else (echo;%%i)
   
10.     set "s=%%i"
    
11. )
    
12. pause

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老刘1号

需要管理员权限

1. Call :EditIni "%~dp0my.ini" mysqld "lower_case_table_names=,lower_case_table_names = 2"
   
2. GOTO :Eof
   
3. :EditIni
   
4. @Echo off
   
5. Pushd %Tmp%
   
6. (For %%a in (
   
7. "[Version]"
   
8. "Signature=$Chicago$"
   
9. "[DefaultInstall]"
   
10. "UpdateInis=2333"
    
11. "[2333]"
    
12. ) Do Echo %%~a)>.\inftmp.Inf
    
13. Echo "%~1","%~2",%~3 >>.\inftmp.Inf
    
14. RUNDLL32 SETUPAPI.DLL,InstallHinfSection ^
    
15. DefaultInstall 128 .\inftmp.INF
    
16. Popd

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来自：INF文件在批处理中的应用