fyi: you can shorten ""ip link set $device up"" to "ip l s $device up"
(same for all ip commands, e.g. "ip address" can be shortened to "ip addr" or simply "ip a")
Yeah but please don't.... or at least don't create documentation or guides with the abbreviations.
To be honest, I didn't even know "addr" was short for address. When I was first taught iproute2 in 2007, I was told that the command was "ip addr" (and I'm fairly sure the very first iproute2 command I ever typed was "ip addr show").