Echo off but messages are displayed

Question

I turned off echo in bat file.

@echo off

then I do something like this

...
echo %INSTALL_PATH%
if exist %INSTALL_PATH%(
echo 22         


        

Answer 1

As Mike Nakis said, echo off only prevents the printing of commands, not results. To hide the result of a command add >nul to the end of the line, and to hide errors add 2>nul. For example:

Del /Q *.tmp >nul 2>nul

Like Krister Andersson said, the reason you get an error is your variable is expanding with spaces:

set INSTALL_PATH=C:\My App\Installer
if exist %INSTALL_PATH% (

Becomes:

if exist C:\My App\Installer (

Which means:

If "C:\My" exists, run "App\Installer" with "(" as the command line argument.

You see the error because you have no folder named "App". Put quotes around the path to prevent this splitting.