For those of you who experience errors like "can't open pseudo-tty" or any other errors related to openning tty here is the information you need to read : If you have glibc2 installed , and you compiled Unix98 PTY support in to the linux kernel, then you need to do some additional configuration stuff. Here is the excerpt from Documentation/Changes file, supplied with Linux kernel 2.2.* : ***************** Documentation/Changes excerpt starts ********************* The most current version should always be available from http://cyberbuzz.gatech.edu/kaboom/linux/ as well. As of 2.1.115, support for the deprecated major 4 /dev/ttyp* devices was removed. If necessary (eg, you get "out of pty" error messages when you obviously are not out of pty's), create major 3 /dev/tty* and major 2 /dev/pty* devices (see Documentation/devices.txt for more information). In general, you should make sure that your /dev directory is up-to-date if you are experiencing any problems. Optional support for Unix98 pty devices has also been added. If you want to use the Unix98 ptys, you should be running at least glibc-2.0.9x, and you must switch completely to Unix98 pty's. The general procedure for configuring Unix98 pty support is: - Compile your kernel with CONFIG_UNIX98_PTYS and CONFIG_DEVPTS_FS. - mknod /dev/ptmx c 5 2 chmod 666 /dev/ptmx mkdir /dev/pts - Add to /etc/fstab: none /dev/pts devpts gid=5,mode=620 0 0 (Note: gid=5 is applicable for RedHat systems for which group "tty" has gid 5. Adjust according to your distribution. Use mode=600 if you want "mesg n" to be default.) - Mount /dev/pts ***************** Documentation/Changes excerpt ends ***********************
