替换字符及文件修改 dos

@echo off
set str=hhhhhh:123456789
set str=%str:~7,20%
echo %str%
pause

 

/*@echo offset /p ip=请输入IP地址:set /p subnet=请输入子网掩码:set /p gateway=请输入网关地址:echo %ip%>>IP.txtecho %subnet%>>IP.txtecho %gateway%>>IP.txt */

 

@echo off
setlocal

rem 用批处理实现文本文件中指定字符串的替换

rem DPATH   : 指定目录
rem FILETYPE: 指定文件类型
rem SCONTENT: 替换前的字符串
rem DCONTENT: 替换后的字符串
rem TMPFILE : 临时文件

set DPATH=D:/
set FILETYPE=*.txt
set SCONTENT=他
set DCONTENT=她
set TMPFILE=%random%.tmp

for /r %DPATH% %%i in (%FILETYPE%) do (
    if exist %TMPFILE% (del /f/q %TMPFILE%)
    for /f "usebackq tokens=*" %%j in ("%%i") do (
      set TMP=%%j
      echo !TMP:%SCONTENT%=%DCONTENT%!>nul 1>>%TMPFILE%
    )
    move /y %TMPFILE% "%%i"
)

endlocal 
pause