(mlstart)xhkjdeMacBook-Pro:pythonstart shimei$ seq 100|awk /1/
1
10
11
12
13
14
15
16
17
18
19
21
31
41
51
61
71
81
91
100
(mlstart)xhkjdeMacBook-Pro:pythonstart shimei$ seq 100|awk /1/,/2/
1
2
10
11
12
13
14
15
16
17
18
19
20
21
31
32
41
42
51
52
61
62
71
72
81
82
91
92
100
awk sed .et trick
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