亂序排列檔案中的所有行(轉)

亂序排列檔案中的所有行(轉)[@more@]

[root@www root]# more test.dat

1 --- I

2 --- L

3 --- O

4 --- V

5 --- E

6 --- Y

7 --- O

8 --- U

9 --- !

10 --- !

[root@www root]# more r.py

import sys,random

lines = sys.stdin.readlines()

olines=[]

while lines:

olines.append(lines.pop(random.randrange(len(lines))))

sys.stdout.write( "".join(olines))

[root@www root]# cat test.dat | python r.py

5 --- E

3 --- O

6 --- Y

10 --- !

8 --- U

1 --- I

7 --- O

2 --- L

9 --- !

4 ---