If your Bluetooth headphones come up as both Headset and Headphones, you want Headphones.

Headset is quite limited in sound quality, intended for older hands-free phone devices.

The error
fakeroot debian/rules clean
: No such file or directory
'. Stop. No rule to make target `
dpkg-buildpackage: error: fakeroot debian/rules clean gave error exit status 2
can be caused by copying from a Windows box, and having Windows line endings in debian/rules.

When migrating content from one S3 bucket to another (as it is not possible to rename a bucket), S3 Browser supports copying files without downloading (as long as they are in the same region), while Cyberduck does not.

If using Corosync/Pacemaker and you get a "ghost" node (due to changing the hostname of a node, for example), the command to delete the node is:

cibadmin --delete --obj_type nodes --crm_xml '<node id="hostname" />'
hostname should be replaced with the name of the node.

You absolutely do want to remove these ghost nodes, as they can prevent elections/allocation of resources, especially if using a two-node cluster.

If using File History for your backups on Windows, do not copy files directly from the backup folders/disk. It appears (but I haven't tracked down exactly what) that there is some permissions applied to the files that doesn't show in the standard File Permissions UI.