Use the Mac OS X terminal (UNIX command line) to find and delete all files matching a pattern

find_and_delete.sh

find . -name '.filename' -print -exec rm -r {} \;

# . = in current directory
# -name = file name to find
# -print = print the result's full file name to standard output
# -exec = execute the following command
# {} = fill in with the result of standard output
# \; = semicolon to terminate the -exec command, and the escape
#      character so that the terminal doesn't treat the semicolon as a 
#      return character (used for stringing together multiple commands).

# Add '-d' to find directories.