Comments on: Linux configure or enable serial console by editing GRUB boot loader http://www.cyberciti.biz/faq/linux-serial-console-howto/ Every answer asks a more beautiful question. Fri, 10 Feb 2012 19:55:56 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Stefan Lasiewskihttp://www.cyberciti.biz/faq/linux-serial-console-howto/#comment-66747 Stefan Lasiewski Thu, 12 Jan 2012 23:49:02 +0000 http://www.cyberciti.biz/faq/linux-serial-console-howto/#comment-66747 <pre> Append the following line: 1:23:respawn:/sbin/agetty -h -L ttyS1 19200 vt100 </pre> The first column '1' may cause problems on most RHEL5 installations. In my case, this cause the error 'INIT: /etc/inittab[69]: duplicate ID field "1"' upon boot. This is because the first column is a unique identifier, and is commonly used to identify tty1: <pre> # Run gettys in standard runlevels 1:2345:respawn:/sbin/mingetty 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 </pre> A better name would be something like S0: <pre> S0:2345:respawn:/sbin/agetty -h -L ttyS0 9600 vt100 </pre> Append the following line: 1:23:respawn:/sbin/agetty -h -L ttyS1 19200 vt100

The first column ’1′ may cause problems on most RHEL5 installations. In my case, this cause the error ‘INIT: /etc/inittab[69]: duplicate ID field “1″‘ upon boot.

This is because the first column is a unique identifier, and is commonly used to identify tty1:

# Run gettys in standard runlevels
1:2345:respawn:/sbin/mingetty 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

A better name would be something like S0:

S0:2345:respawn:/sbin/agetty -h -L ttyS0 9600 vt100
]]> By: John Doehttp://www.cyberciti.biz/faq/linux-serial-console-howto/#comment-60522 John Doe Wed, 06 Jul 2011 19:32:08 +0000 http://www.cyberciti.biz/faq/linux-serial-console-howto/#comment-60522 I started banging my head on the wall when I got to "now reboot your server". Contradiction in terms. I started banging my head on the wall when I got to “now reboot your server”. Contradiction in terms.

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