Edit a Config File in Place with sed — hands-on lab

Edit a Config File in Place with sed

easy 10 XP ~5 minHands-on lab

The syncd service must move to a new upstream. Its config is /srv/lab/conf/syncd.conf, where the active upstream_host setting still points at legacy.internal.

Task

Change the active upstream_host setting to primary.internal, editing the file in place.
Keep a copy of the original file as /srv/lab/conf/syncd.conf.bak.
The commented-out upstream_host line must stay exactly as it is, and every other setting must remain unchanged.

About this machine

Ubuntu 24.04 with no internet access. You are student with passwordless sudo. The grader checks the final state of the machine, not the commands you typed. Values like names and ports are generated for you.

sed config text

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