Hello,
Considering the following concept bash:
With an example:
I want to convert this in Gambas, with Exec and Process Read, please, can you help me ?



In Contents-Read () how to read the last line of the standard output of the process ?
What code use to close or kill the process ?

Run this code in a new 'Graphical' application. Hopefully it will help you.

I known already it, I know read the help of Gambas  
It's not the answer I need. Currently, this line return the whole output. Considering a bash command which run in an infinite loop. I want only the last line of the standard output, test it with my condition and let the run until my condition is true, then kill the process.
Edit : for more detail my need, I edit my first post with a concrete bash command.

Maybe I got it wrong…
In my view, what you need is to perform a dynamycal analyisis on the output of the console.
That is more difficult, since you need to know precisely if the output is something formatted as lines. Otherwise, you end up with an endless string which has only one line, which is always "the last line". So we're in a vicious cricle here: <COLOR color="#FF0000">what is "last line"?</COLOR>
If I understood it right, the first step would to direct the output from the console, into a string variable.
As an intermediate phase, you load it into a TextArea and get the image on how it looks like:
All you need here is a FMain module and a TextArea1 control.
To trigger the process, put a Button1 above the TextArea1, then on Button1_Click() event, call the procedure that does the Shell or Exec. Say…


If you do this, you need to set the Wrap property to "False ", to prevent wrapping the contents. This is how you find out if there is only one string, or there are more lines.
In the code above, I admitted <COLOR color="#FF0000">by default</COLOR> that we got LINES. That is, more than one line, which is always "LastLine".
<COLOR color="#FF0000">NOTE:</COLOR>
I wrote the code in place from memory so YOU GOT TO TEST IT, and obviously, fill the required lines to catch the console output into the string [strConsoleOutput].
Since I hate console, I leave it up to you to write the appropriate code.
…
The other way around…
I have to figure out how to do this, because it goes beyond my understanding how you can test a string that is continuously generated and you want to find something in it, in real time. Meaning, as it is generated.

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The other thing you need to do, is write the code for the Stream: to open it, read the lines from [strConsoleOutput] into [strCurrentLine] and test the [strToken]
As I said though, <COLOR color="#FF0000">maybe I got it wrong…</COLOR>

Solved:
I was not on the right the way. In Process_Read() we need to use Line Input instead of Read for that context.

Philippe734 said

we need to use Line Input instead of Read for that context.

That is the point:
In the code I put there, and I mentioned "I SUPPOSED", the idea was to "Read Line", but the specifics of the output, were only a supposition.
Without a line formatted output, it's very difficult to "catch" a certain token, since the "one line" output is constantly changing.
If we have lines, it's easier, we can kill the process, once the token showed up. That spears CPU/RAM time.
The other approach, would require a loop (While/Wend) and reading recursively the current output, as it was generated at each iteration.
While the test condition is static, the test string changes continuously.
Problem is that I know nothing about how can you get out of the Shell/Exec the value of strOutput BEFORE the command ends. The test is otherwise, trivial.

… do whatever necessary