Find and check if negative write

Question

Hello,

i'm creating a batch file and just a little thing i want to know:

my (WINDOWS) batch file needs to search 'hello' in a text file.

If it is there, it should use the GOTO command to somewhere else in the batch file.

If it isn't there, it should write 'hello' on a new line.

How can you do that?

I know that you can use FIND and ERRORLEVEL, but i don't know how.

Answer 1

If you are using windows batchfiles, check if you can use helpers like the Unxtools. They are adding a lot of functionality.
Then you can use a grep and check the errorlevel (return value) ...

EDIT:
Here is some code to give you an idea:

find /i /c "hello" file.txt
if %errorlevel% equ 0 goto :found
echo hello

Answer 2

This may not be the most helpful answer... but, does it have to be a batch file? It sounds like Perl might be a better fit for what you are trying to do.

Answer 3

Try this one

echo off
find /c "hello" myfile.txt > nul
if errorlevel 1 goto notfound
echo hello
:notfound