[RndTbl] UNIX command transcript with canned input, echoed in output?
billreid at shaw.ca
Fri Nov 25 14:49:41 CST 2011
I used expect a lot but it was a decade ago. The problem of synchronizing the
input with the output is tough because of buffering. Also I expect the prof does
not want the input/output just merged but the input be highlighted in some way
so that the student can quickly identify it.
I was using expect to make decisions based on the output of the program which
does get complicated.
I checked for expect samples and they really do not do what you want.
On 25/11/11 14:16, Gilbert E. Detillieux wrote:
> On 2011-11-25 14:07, Bill Reid wrote:
>> I think the TCL expect package might do the trick. It simulates a person
>> entering text in a terminal session. The command and output are intermix
>> as you want.
> I though about "expect", but figured that it might be a bit too low-level, and
> more complicated, than what I'm looking for. This has to be easy enough for
> novice UNIX users to use. (It's essentially to run a test suite on their
> programs, written in Prolog. Yikes!)
> I'm also not very familiar with actually coding for "expect" (though I've
> tweaked other people's expect scripts, and at least know a bit about how to use
> it), and the prof is not at all familiar with it.
> Would it be easy to write an expect script to do what I want? (I.e. feed the
> input from a file, line-by-line, to a program, and collect all the output,
> including tty echo, into a file?)
>> On 25/11/11 13:56, Gilbert E. Detillieux wrote:
>>> Howdy folks!
>>> I got a request from a prof this morning that stumped this old UNIX
>>> hack. He
>>> wants to run a UNIX command (for a language interpreter), using input
>>> from a
>>> file, and saving a transcript of the output. That much is trivial. The
>>> catch is
>>> that he'd like the transcript to have the input echoed, as if it had
>>> been typed
>>> in at the tty.
>>> I've looked at options on the script command and ssh, but can't find a
>>> solution to this. And it has to be simple enough for his students (who
>>> may not
>>> have much UNIX experience) to use.
>>> Any suggestions?
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