Question

Context

I check several servers with nmap and I send the result by email.

I concatenate a variable with new result for each server and each ports with this code (I removed loops):

SET text=
SET text=!text!+"<h1>server %%i:</h1>
SET text=!text!+"Port %%a : %%b<br/>"
SET text=!text!+"<br/>"

And I send one email with text variable.

Email rendering:

server 2:

+Port 8443 : https-alt
+
+
server 3:

+Port 2103 : zephyr-clt
+Port 2105 : eklogin
+Port 2107 : msmq-mgmt
+Port 49155 : unknown
+
+

I try whithout + but it doesn’t work:

SET text=
SET text=!text! "<h1>server %%i:</h1>
SET text=!text! "Port %%a : %%b<br/>"
SET text=!text! "<br/>"

I try unsuccessfully several alternatives.

Question

How to concatenate my text variable without ugly +?

Answer which works

SET "text="
SET "text=!text! ^<h1^>server %%i^</h1^>^<br/^>"
SET "text=!text! Port %%a %%b^<br/^>"
SET "text=!text! ^<br/^>"
%blat% -server %server% -port %port% -f %from% -to %to% -html -s "Opened ports" -body "!text!"

Answer 1

set "str1=Hello"
set "str2=World"

set "str3=%str1%%str2%"
set "str4=%str1% %str2%"

Output:

HelloWorld
Hello World

It doesnt work because you have special character in your strings (quotes, <, >, \, etc.).
You have to use the quote ” and the remove the quotes with the following code:

:NOQUOTES
       SET _string=###%_string%###
       SET _string=%_string:"###=%
       SET _string=%_string:###"=%
       SET _string=%_string:###=%