tutorial - How To disable virtual consoles (Alt+F1)

You can easily access these virtual console using keyboard combination by simply hitting Alt+F1 (tty1) upto sixth (Alt+F6) tty console. you can easily login to these console.

There is a quick and effective way to disable these console.

1) Open /etc/inittab file and look for the section

1:2345:respawn:/sbin/mingetty --noclear tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5
6:2345:respawn:/sbin/mingetty tty6

As you can see above there are 6 lines (one for each virtual console), simpily placing "#" at the begning of the line will disable that particular console. Suppose I need to disable console no 4,5,6 so, in this case my inittab file will look like ..

1:2345:respawn:/sbin/mingetty --noclear tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
#4:2345:respawn:/sbin/mingetty tty4
#5:2345:respawn:/sbin/mingetty tty5
#6:2345:respawn:/sbin/mingetty tty6


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source:http://linuxpoison.blogspot.com/2008/08/13578175715198.html

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