python简单实现linux命令strings

# -*- coding: utf-8 -*-

import re
def strings(file) :
    chars = r"A-Za-z0-9/\-:.,_$%'()[\]<> ";
    shortestReturnChar = 4;
    regExp = '[%s]{%d,}' % (chars, shortestReturnChar);
    pattern = re.compile(regExp);
    with open(file, 'rb') as f:
        return pattern.findall(f.read());

#http://blog.csdn.net/yatusiter/article/details/8067587
#python  main.py  torch_unsign.apk python简单实现linux命令strings
if __name__ == "__main__":
    import sys
    print "name:", sys.argv[0]
    len=len(sys.argv);
    if len<=1:
        exit(0);
    for i in range(1, len):
        print "argc", i, sys.argv[i]

    lines=strings(sys.argv[1]);
    for line in lines:
        print(line);