How to connect two string with a line break??

[linuxyf]

@echo off
set str1=this is line 1
set str2=this is line 2

rem how to write following code???
set str3= ??

echo %str3%
pause



the result is:
this is line1
this is line2

[Sidewinder]

Code: [Select]

@echo off
set str1=this is line 1
set str2=this is line 2
echo %str1% && echo %str2%

By concatenating the two echo commands, you effectively insert the carriage return line feed characters.

 

[linuxyf]

thank you very much!