Question

I would like to find all files that end with .c, .R, or .Rd. I tried

find . -iname "*.[cR]" -print

which gives all files that end with .c or .R. How can I additionally get .Rd files as well? I know that [] only matches one character, but I couldn’t adjust it to provide .Rd files as well (tried to work with | or option -regex etc.)

Answer 1

Here you go =)

find -name "*.c" -o -name "*.R" -o -name "*.Rd"

If it’s just the 3 extension types that you are looking for, I’d recommend staying away from regex and just using the -o (as in “or”) operator to compose your search instead.