topic Re: Making perl getc work as advertised in Operating System - HP-UX

Making perl getc work as advertised

Matt Hearn — Mon, 14 Mar 2005 15:44:35 GMT

I'm trying to figure out how to get perl "getc" to work in a way that you don't have to hit "enter" to get it to read the character.

Right now, I can type a letter and then hit "enter" and it reads the letter, but I want to make a menu script that won't require the "enter" input, just read the letter when pressed and continue.

I'm told that there are stty settings that can make this happen, but I can't find any documentation that tells me what they might need to be on an HP-UX server.

I'm not even sure if what I want to do is possible with perl, but my perl manual seems to indicate that it is if the stty settings are right.

Has anyone been able to do this? Thanks!

Re: Making perl getc work as advertised

Rodney Hills — Mon, 14 Mar 2005 16:05:13 GMT

stty -raw

is probabily what you are looking for.

HTH

-- Rod Hills

Re: Making perl getc work as advertised

Matt Hearn — Mon, 14 Mar 2005 16:21:26 GMT

Almost right; it actually turned out to be "stty raw" (instead of "stty -raw"). That fixed it!

Thank you!!!

Re: Making perl getc work as advertised

Vali Ticau — Mon, 14 Mar 2005 16:55:52 GMT

This is a FAQ, please run:

perldoc -q keyboard

Re: Making perl getc work as advertised

A. Clay Stephenson — Mon, 14 Mar 2005 17:10:57 GMT

stty raw will do this but a better approach would be to use one of the Curses modules so that keystrokes like Arrow-Keys (which vary with TERM) can be recognized independent of the terminal type.

Re: Making perl getc work as advertised

H.Merijn Brand (procura — Mon, 14 Mar 2005 17:48:46 GMT

using stty commands is not very portable in Perl scripting. If you're only using it on a single machine, don't use redirection (input from files instead of keyboard) or stick it in batchjobs, you might be OK, otherwise I'd suggest looking for more portable ways, like Term::ReadLine, Term::ReadLine::Gnu, Term::Cap, Term::GetKey, readline, and probably many others available on CPAN

http://search.cpan.org/search?query=Term%3A%3A&mode=all

Enjoy, Have FUN! H.Merijn