@echo off&setlocal enabledelayedexpansion
for /l %%a in (1,1,20) do set "k=!k! "
for /f "delims=" %%a in (a.txt) do (
set "str=%%a%k%"
echo !str:~,20!,>>new.txt
)
start new.txt
@echo off&setlocal enabledelayedexpansion
for /l %%a in (1,1,20) do set "k=!k! "
for /f "delims=" %%a in (a.txt) do (
set "str=%%a%k%"
echo !str:~,20!@qq.com>>new.txt
)
start new.txt