differ.py

import commands
import glob
import os

difflines = 12

# Get all .m files
target_dir = 'tmp' #No trailing slash
command = 'rm -rf '+target_dir
os.system(command)
command = 'mkdir '+target_dir
os.system(command)
command = 'find . -iname "*.m" -exec cp "{}" '+target_dir+ ' \;'
os.system(command)



files = glob.glob( target_dir+'/*m'  )
files2 = files

for filename1 in files:

        for filename2 in files2:

                command = 'diff -y --suppress-common-lines '+filename1+' '+filename2+" | grep '^' | wc -l"
                status, output = commands.getstatusoutput( command )
                if (int(output) < difflines) and (filename1 is not filename2):
                        print '## Close files ##'
                        print 'Score: '+str(int(output))
                        print filename1
                        print filename2