Alternative `tree`, suing only find and awk

tree.sh

#!/bin/bash

#
# Alternative to `tree`, lists directories/files in current directory
# Original credit to jweyrich from Stack Overflow: http://superuser.com/a/409654
# Edited by Mario Lopez
#

find $1 -print 2>/dev/null | awk '!/\.$/ { \
    for (i=1; i<NF; i++) { \
        printf("%4s", "|") \
    } \
    print "-- "$NF \
}' FS='/'