Handling interactive command

[KINGSABRI]

Hi
I'm writing a simple ssh client, the gem is working well and stable for me. However, I'm facing an issue (the script hangs) when I deal with interactive commands such as passwd.

Is there an easy way to handle this situation?

[stillhart]

Try the dialog method. It would be something like this for your passwd example:

cli.dialog "passwd", /Current Password:/i
cli.dialog "Old Password", /New Password:/i
cli.dialog "New Password", /Repeat Password:/i
cli.cmd "New Password"

you also could specify the prompt as an option of cmd

cli.cmd "passwd", prompt: /Current Password:/i

You also could just go the fire and forget way, but you would have way less guarantees:

cli.cmd "passwd\nOld Password\nNew Password\nNew Password"

But like this, you have a higher risk of it hanging somewhere.

If you have a look at the source code, you can see that most methods are just ways around this

cli.write "passwd\n"
cli.stdout
# => current buffer state
cli.process
# further 'process' packets of the SSH connection => fills/empties the buffer

[KINGSABRI]

I see,

The dialg way is elegant to me. However, It would be great to have something to expect any dialog prompt in general by default.

I don't know if there is a specific STDOUT behavior for the interactive dialogs or not.

I understand the gem is made for expected output scripting and in my case I want to make it general case.

[KINGSABRI]

I think the best example for interactive behavior is opening a file using a text editor like nano/vim.