!/usr/bin/python

import sys

argvs = sys.argv

if len(argvs) != 2:

    print '  usage: $python %s [filename]' % argvs[0]

    sys.exit(1)

line = ""

buffsize = 1024 * 1024 * 1024 # 1GB buffer

while True:

    buff = f.read(buffsize)

    line += buff

    if len(buff) != buffsize:

        break

print '  line is %s . ' % line.count('[#@@@@#]')

</pre>