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Re: what's the difference between /dev/tty1 and /dev/console
Yue Chen wrote:
> I have two hosts installed with cygwin. When I click the cygwin icon
> on host1, the prompt CLI window's tty is /dev/console. However, when I
> click the icon on host2, the CLI window's tty turns to be /dev/tty1.
> In the first window, all windows applications run very well. But in
> the /dev/tty1 window, some windows application can not run
> successfully. Does any one know why?
Brian Dessent wrote:
> /dev/console means that the session is running in a real Windows
> console.
>
> /dev/tty1 means that the session is running attached to a pty
> (pseudoterminal) which is emuated by Cygwin.
>
> Since ptys are an emulated concept that don't exist in Windows,
> non-Cygwin programs get confused by them because they think their output
> is a pipe and not an interactive session.
>
> If you use any terminal but the stock Windows console (i.e. rxvt, xterm,
> ssh connection) or you have "tty" in your CYGWIN environment variable
> you always get a pty. The only time you get a console is when you
> don't have "tty" set and you invoke bash from a real Windows console.
I'm not so knowledgable on this subject, so forgive my ignorance.
I run bash from rxvt:
> ps
PID PPID PGID WINPID TTY UID STIME COMMAND
19992 1 19992 19992 con 78809 08:22:53 /usr/bin/rxvt
32960 19992 32960 61760 0 78809 08:22:53 /usr/bin/bash
19292 32960 19292 33136 0 78809 08:43:42 /usr/bin/ps
It's started using via a shell shortcut using the target:
"C:\cygwin\bin\rxvt.exe -e bash --login"
Doesn't this show that the rxvt window is a console?
I also noted in 'man rxvt':
-C Capture system console messages.
When I add it to the above, every window opened is also a console.
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