How can I configure my UNIX or/and Linux PC with COM port to support serial console connections? I would like to connect my notebook to that PC via a console cable and manage the PC with terminal emulation software like putty, as if I use keyboard directly.
I have this line in
/etc/inittab on a server I run that has a serial console:
T0:23:respawn:/sbin/getty -L ttyS0 57600 vt100
ttyS0 is the serial port. That's all there is to it, at least here.
Edit: You'll probably want something like this in your grub.conf:
serial --unit=0 --speed=57600 terminal --timeout=10 serial console
And then with each kernel:
kernel /boot/vmlinuz ro root=/dev/md1 console=tty0 console=ttyS0,57600
(The important part is the
In addition to the other answers, I'd suggest looking here:
Specifically, the GRUB section so that you can get the boot menu too (not just the OS once it begins to load):
See the other answers if your distro uses
inittab. But Ubuntu uses
/etc/event.d and most other distros are or will as they adopt the more modern init daemon Upstart. At least it will eventually get rid of those hideous System V "run levels".
If you do have a
/etc/event.d/, in there you should have
tty2, .... You may need to copy one of the
tty files to
/proc/devices to see what you have.)
These files look something like:
# tty1 - getty # # This service maintains a getty on tty1 from the point the system is # started until it is shut down again. start on stopped rc2 start on stopped rc3 start on stopped rc4 start on stopped rc5 stop on runlevel 0 stop on runlevel 1 stop on runlevel 6 respawn exec /sbin/getty 38400 tty1
Be sure the device name and the speed are what you want.