In earlier times I was able to open a pair of pseudo terminals /dev/ttyp9 and /dev/ptyp9.
It was easy to do something like:
$ cat /dev/ptyp9
and in another shell
$ echo Hallo > /dev/ttyp9
But on my linux ( fedora 40 ) there is no /dev/pty... anymore :-(
I found that there is something different with device files /dev/ptmx and /dev/pts
I was able to
$ cat /dev/ptmx
and
$ echo Hallo > /dev/pts0
which has the same effect as with the /dev/ttyp0 and /dev/ptyp0. But if I open
/dev/ptmx again to get a second pair of ptys I have no idea what is the corresponding device name.
The man page tells me that I have to use ptsname(). But this requires to write a c program. I want to use ptys from shell.
Is there any chance to get a pair of ptys which can be used from a shell?
Asked by Klaus
(518 rep)
Jan 21, 2025, 10:13 AM