parsing the system prompt

[Jon August]

Hi,

For a long time, I've been using:

expect.expect(contains("#"));

to wait for the system prompt, but I've been lucky.  Today I found that unexpected results occurred when I found a "#" in the middle of the output of a command.  

I'm surprised this hasn't happened before, but it's probably because I'm not usually very dependent on the responses from the system.

Regardless, I'm wonder if there's a best way to wait for a prompt.  I have considered parsing out and then looking for the full prompt (i.e. hostname#), but I think this could present other complications.

If there's a smarter way, I'd appreciate the help.

Thanks,

   Jon

[Jon August]

OK, here's what I did...  As soon as I got into the system, I send a basic command and look for "#" and collect the Result:

singleResult = expect.expect(contains("#"));

String prompt = singleResult.getInput();
String[] promptLines = prompt.split("\n");
prompt = promptLines[promptLines.length - 1];
prompt = prompt.trim();
System.out.println("PROMPT:---" + prompt + "---");

This seems to do the trick.  Let me know if you have a better solution.  Thanks!

[Anurag Shrivastav]

A solution I came across on Perl's Expect FAQ was to echo a special string after every command. Example: (ls; echo -n END_; echo COMMAND). Then search for 'END_COMMAND' to detect command execution completion. 

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