T address privat key

i have been searching the forum but could not find what i need.

I created a t address in zcash core and have some coin on that address.
Now i want to save the private key for that address so in case something goes wrong i have a backup.

How would i do that?

zcash-cli dumpprivkey enter-your-taddr-here

Also, while you're at it, have a good look at

zcash-cli help

thank you Voluntary
i looked at zcash-cli -h and it didn't give me the output help does