As I've said, this blog is meant for things I find myself repeatedly doing. Especially, when I am doing them on different *nix systems I end up googling and eventually finding my same references:
This stackoverflow thread tends to be my main one to use for when I need to look for files containing as specific thing in them. For instance, I often forget the full syntax in proc means for SAS.
So I go to my code bases and execute the following:
find . -name "*.sas" | xargs grep "proc means" | less
I also sometimes need to find files that contain specific things in them and copy them to a specific location. I found this stackexchange thread useful (although not totally clean yet):
find . -name "*.sas" | xargs grep -l "proc means" | xargs cp -t ~/destination