I’ve always found *nix’s “find” and “grep” rather hard to use. Not only are there different flavors of regular expressions to use, but mainly different syntax. For find, the directory you’re searching for comes first. For grep, it comes last. To find the negation of something, you’d use “-not” and for grep it’s “-v”. pain.
Anyway, been trying to learn my tools better, and I found out how to grep and replace expressions across multiple files through emacs. Since rails uses all sorts of file extensions, naturally, I wanted to
grep for find different files types. I had thought the -name options took regexs (it doesn’t), so I had tried it in regex (no go)…only to find that it’s something like this:
find . -name "*.rb" -o -name "*.rhtml"
the -o is the equivalent of a boolean “or”. small tip…