How to know the network name

[Karl Auer]

On Sat, 2021-10-23 at 17:14 -0400, Jerry Geis wrote:
> The system(s) are remote - can't do that - got one shot so to speak.

How important are the systems? And how much are you being paid to do
this? :-)

A one-shot, with no workable reversion strategy, is a recipe for
disaster. There are so many things that can trip you up, and not all of
them are testable. Find out a way to have multiple shots. For example,
install the same version of CentOS into a virtual and experiment on the
virtual, restoring it after any failures.

For changes that a reboot can undo, investigate using "at" to reboot
the system. The idea is that you set the system up to boot ten minutes
from now, make your change, and if you are then unable to reach the
system and prevent a reboot, it will recover in ten minutes.

   echo "reboot" | at now + 10 minutes

If the change you make is reversible on the command line, you can also
use "at" to revert the change directly.

Obviously run the command as root and check manually that the command
works before actually making a change that might need it.

Regards, K.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer

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