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Full Discussion: /dev/console file
Top Forums UNIX for Dummies Questions & Answers /dev/console file Post 64775 by RTM on Wednesday 2nd of March 2005 10:47:33 AM
Old 03-02-2005
If you had been on system A and used ssh/telnet/rlogin to go to system B and tried that command, you would have gotten the expected result.

Since you were on the console of the system, /dev/console was returned. It is, simply, the 'terminal' associated with the monitor attached directly to the server.

You can find more information by reading the man pages for the following commands and then trying those commands (you should always have an understanding of what a command will do before attempting to use it).

$ man file
$ man ls
$
$ ls -l /dev/console
$ file /dev/console
 

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LEARN ABOUT REDHAT

tty

TTY(4)							     Linux Programmer's Manual							    TTY(4)

NAME

       tty - controlling terminal

DESCRIPTION

       The  file /dev/tty is a character file with major number 5 and minor number 0, usually of mode 0666 and owner.group root.tty.  It is a syn-
       onym for the controlling terminal of a process, if any.

       In addition to the ioctl() requests supported by the device that tty refers to, the following ioctl() request is supported:

       TIOCNOTTY
	      Detach the current process from its controlling terminal, and remove it from its current process group, without attaching  it  to  a
	      new  process  group  (that  is,  set  its  process group ID to zero).  This ioctl() call only works on file descriptors connected to
	      /dev/tty; this is used by daemon processes when they are invoked by a user at a terminal.  The process attempts to open /dev/tty; if
	      the open succeeds, it detaches itself from the terminal by using TIOCNOTTY, while if the open fails, it is obviously not attached to
	      a terminal and does not need to detach itself.

FILES

       /dev/tty

SEE ALSO

       mknod(1), chown(1), getty(1), termios(3), console(4), ttys(4)

Linux								    1992-01-21								    TTY(4)
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