source: vendor/bash/3.1-p17/examples/functions/xfind.bash

#! /bin/bash
#From: kaz@cafe.net (Kaz Kylheku)
#Newsgroups: comp.unix.shell
#Subject: Why not roll your own @#$% find! (was: splitting directory off from filename)
#Message-ID: <6n1117$tp1@espresso.cafe.net>
#Date: Fri, 26 Jun 1998 20:47:34 GMT

# $1 = dirname, $2 = pattern, optional $3 = action
xfind()
{
        local x
        local dir="$1"

        # descend into specified directory

        builtin cd -L "$1" || {
                echo "${FUNCNAME}: cannot change dir to $1" >&2
                return 1
        }

        #
        # default action is to print the filename
        #
        if [ -n "$3" ]; then
                action="$3"
        else
                action='printf -- "%s\n"'
        fi

        # process ordinary files that match pattern

        for x in $2 ; do 
                if [ -f "$x" ] ; then
                        eval "$action" "$x"
                fi
        done

        # now descend into subdirectories, avoiding symbolic links
        # and directories that start with a period.

        for x in * ; do
                if [ -d "$x" ] && [ ! -L "$x" ] ; then 
                        $FUNCNAME "$x" "$2" "$action"
                fi
        done

        # finally, pop back up

        builtin cd -L ..
}

#xfind "$@"