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How to: Console into Sun, Linux and other servers from a Linux box

I’ve always had a tough time figuring how to console in using a Linux box to other servers such as another Linux box, Sun server or a Cisco device. Having a background of Sun, the command tip -9600 /dev/cua/b or tip hardwire is embedded in my brain. But whenever I want to quickly console in from a Linux box, I start scratching my head a bit.

Well here it is…in this article I’ve listed several methods to use a serial console on Linux.

By the far the easiest way is to simply type the following:

screen /dev/ttyS0

If the above fails for some reason, add the following line to your /etc/inittab file:

S0:12345:respawn:/sbin/agetty -L 115200 ttyS0 vt102

Then, once again type:

screen /dev/ttyS0 115200

You can also use minicom if the above fails.  If you don’t have it, install it via yum install minicom or apt-get install minicom depending on what Linux platform you’re on.  Once you have it installed, type minicom. Then select the port, speed and /dev/ttyS0 as COM1.  Save the configuration file and you’re set.

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