Custom Widget to show the output of a command

TrueNAS General
1

It is possible to create a custom widget to show the output of a command?

I would love keep an eye on the RAID controller temperature .

/opt/MegaRAID/storcli/storcli64 /c0 show all | grep temp

2

I’m also trying to do the same to monitor my UPS battery level. The only custom widget option is “arbitrary text”. Am I missing something?