The Finder hides the standard Unix files and folders from you.
You can “Go To Folder…” and type in the name of the folder such as /var/log, but that’s fiddly and you still don’t see the “dot” files.
There’s a terminal command that will make all files and folders display in your Finder.
To do this open terminal from applications\utilities
At the terminal prompt enter
defaults write com.apple.finder AppleShowAllFiles TRUE
Note you need to use the capitalisation shown in the cammand lines.
This will show all hidden files in the Finder.-