Hash crack first charaters known

[Pontirez]

How could I run a brute force when I know the first few letters of a hash? I am using this now:

hashcat -m100 -a3 -o cracked.txt. hashed.txt

I know the first 5 characters and their order. 
Thanks in advance for your help and time.

[Pontirez]

Nevermind I figured it out. Sorry I am still new to this stuff

[Lones]

If you want to create a command using hashcat you can ask chatgpt, if you don't have too complex request as far as I know it gives good suggestion. Just try asking "Im using hashcat and I want to create a command which is..."