Using Pseudo-Terminals to Control Interactive Programs (2010)

#1

Post by robertelder » Sat, Jun 10, 2017, 3:26 PM UTC

Using Pseudo-Terminals to Control Interactive Programs (2010)
rachid.koucha.free.fr

Re: Using Pseudo-Terminals to Control Interactive Programs (2010)

#2

Post by liveoneggs » Sat, Jun 10, 2017, 5:30 PM UTC

a less featured expect for some reason

Re: Using Pseudo-Terminals to Control Interactive Programs (2010)

#3

Post by jevinskie » Sat, Jun 10, 2017, 5:30 PM UTC

The problems that are solved by PTYs finally "clicked" for me when I read their example of the problematic fseek/flushing. I hadn't seen such a cogent expiation until now.

Re: Using Pseudo-Terminals to Control Interactive Programs (2010)

#4

Post by Animats » Sat, Jun 10, 2017, 5:43 PM UTC

Controlling a human-interactive program with another program is pounding a screw, but it does work for simple programs.

Re: Using Pseudo-Terminals to Control Interactive Programs (2010)

#5

Post by megapatch » Sat, Jun 10, 2017, 6:00 PM UTC

Expect?

Re: Using Pseudo-Terminals to Control Interactive Programs (2010)

#6

Post by drudru11 » Sat, Jun 10, 2017, 6:31 PM UTC

jevinskie wrote: post #3

The problems that are solved by PTYs finally "clicked" for me when I read their example of the problematic fseek/flushing. I hadn't seen such a cogent expiation until now.

True, but be warned, that fseek is not a real example. You cannot fseek/lseek on character devices. You would have to use a different technique.

Re: Using Pseudo-Terminals to Control Interactive Programs (2010)

#7

Post by bch » Sat, Jun 10, 2017, 6:39 PM UTC

For those seeing "Expect" and not knowing what's going on: https://en.wikipedia.org/wiki/Expect

One of Tcl's first "killer apps". Don Libes' (creator of Expect) book "Exploring Expect" is also one of those technical masterpieces that are very enjoyable, entertaining technical reads. Recommended if only for the discussions of terminals and interactive i/o.

[edit: typo/punctuation]