一、打印最常用的10条linux命令
#!/usr/bin/python
#coding=utf-8
import os
from collections import Counter
c = Counter()
with open(os.path.expanduser('~/.bash_history')) as f:
for line in f:
cmd = line.strip().split()
if cmd:
c[cmd[0]]+=1
print c.most_common(10)
效果如下：
二、找到目录下重复的文件
#!/usr/bin/python
#coding=utf-8
from __future__ import print_function
import sys
import hashlib
import os
import fnmatch
CHUNK_SIZE=8192
def is_file_match(filename,patterns):
for pattern in patterns:
if fnmatch.fnmatch(filename,pattern):
return True
return False
def find_specific_files(root,patterns=['*'],exclude_dirs=[]):
for root,dirnames,filenames in os.walk(root):
for filename in filenames:
if is_file_match(filename,patterns):
yield os.path.join(root,filename)
for d in exclude_dirs:
if d in dirnames:
dirnames.remove(d)
def get_chunk(filename):
with open(filename) as f:
while True:
chunk=f.read(CHUNK_SIZE)
if not chunk:
break
else:
yield chunk
def get_file_checksum(filename):
h=hashlib.md5()
for chunk in get_chunk(filename):
h.update(chunk)
return h.hexdigest()
def main ():
sys.argv.append("")
directory=sys.argv[1]
if not os.path.isdir(directory):
raise SystemExit ("{0} is not a directory".format(directory))
record={}
for item in find_specific_files(directory):
checksum=get_file_checksum(item)
if checksum in record:
print ('find duplicate files: {0} vs {1}'.format(record[checksum],item))
else:
record[checksum]=item
if __name__ == '__main__':
main()
效果如下：
