Adjust the number of TTY terminals started by default in CentOS

CentOS starts 6 TTY by default. in the console, you can use the Alt + [F1 & mdash; F6] key to switch between different terminals, using SSH virtual terminal to manage remote servers is not available, which can reduce the number of TTY started to reduce system resource usage. CentOS5 modify the description of the configuration file to prohibit start of TTY: 123456ca

CentOS starts 6 TTY by default, with Alt + [F1-F6] keys available in the console switching between different terminals, these are not available to manage remote servers via SSH virtual terminal, reduce the number of TTY started to reduce system resource usage.
CentOS5 modify the description of the configuration file to prohibit start of TTY:

123456

cat /etc/inittab#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

Modify the number of TTY started in CentOS6:

123	Sed-I's/\/dev \/tty \ [1-6 \] // dev \/tty \ [1-1 \]/g'/etc/init/start-ttys.conf sed- i's/\/dev \/tty \ [1-6 \]/\/dev \/tty \ [1-1 \]/g'/etc/sysconfig/init # Change to start 1 TTY

Close the specified terminal:

1	initctl stop tty TTY=/dev/ttyn

Kill a specified end user:

1	pkill -kill -t ttyn