The line above appears to remove all nerdtool txz's from the non-existant /boot/exta directory rather than /boot/extra. In other words, extra appears to have a typo (it is missing an 'r').
Note: I have not verified this issue experimentally. I noticed it by inspecting the code.
https://github.com/UnRAIDES/unRAID-NerdTools/blob/d1a1ef24ece29134501c71a3302bd04d9d431e09/plugin/NerdTools.plg#L227
The line above appears to remove all nerdtool txz's from the non-existant
/boot/exta
directory rather than/boot/extra
. In other words, extra appears to have a typo (it is missing an 'r').Note: I have not verified this issue experimentally. I noticed it by inspecting the code.