Is it possible to automatically give answers to an interactive program in bash?

[gramarga]

Hello, everyone.

I am using an interactive program that mostly asks questions expecting yes/no answers. I need to run this program 1000 times and would like to do that with bash.

Is there any way to automatically give these yes/no answers to the program, since they will always be the same?

Thanks in advance,
Gabriel.

[Ramses de Norre]

How are they asked, what kind of interface? Can you modify the source of the program asking the questions?
You'll need to give more details...

[kknd]

You can do, redirecting the input / output to the program.
In Java, you can do that with the "Process" class.

[slavik]

program < inputfile_with_predetermined_answers

[gramarga]

Thank you all for the replies.

slavik, your hint was enough to do the job.
Thanks a lot!

Gabriel.

[cwaldbieser]

Thank you all for the replies.

slavik, your hint was enough to do the job.
Thanks a lot!

Gabriel.

If you just want to give the same answer to all the questions, the "yes" command might also work:

$ yes | your-prog

[slavik]

If you just want to give the same answer to all the questions, the "yes" command might also work:

$ yes | your-prog

I did not know that existed :D

[Keith Hedger]

Try using a HERE script,
For full details see the Advanced Bash Scripting guide, its in the repos under abs somthing!