print `env`
2017/02/11 19:15:12
1
`set|set&set`
2017/02/11 19:15:12
1
set|set&set
2017/02/11 19:15:12
1
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|