undergroundwires
commented
2 years ago I double-checked and it seems to be O (not the number).
Unfortunately font on GitHub is not very clear. I uploaded the notes as website online for easier reading. Another option is to click Raw button on top and this is where we get the monospace.
I appreciate that you're willing to improve and very happy with your reports. So feel free to shoot if there's anything else.
In Banner Grabbing Tools sections says: "nmap -0 for OS automatic fingerprinting" but I think it should be "nmap -O " according to Nmap.org.
It could be a silly thing that has to do with github font or my browser (if so, I'm sorry for bringing this up) but might generate some confusion for newbies like me. Thanks for the resources!