I don't know if it's actually Unix operation, but there are often times when the instruction says we should use "./bin/WHATEVER" while other times says "/bin/WHATEVER"
What's the difference?
A period means the current directory and a path that starts with a /
is the very root of the partition. So this:
./bin/whatever
Means a folder called bin
inside the current directory. Whereas this:
/bin/whatever
Means the bin
folder is in the root of the partition.