awk && sed (4) ====linux The Three Musketeers of the awk command

Source: Internet
Author: User

Http://www.cnblogs.com/ginvip/p/6352157.html


This is a blog I found, the content of awk is written very well, need to see


awk about! No.


(1) Take odd lines

[[email protected] shell]# SEQ 10 | awk ' I=!i '

1

3

5

7

9



(2) Take even lines

[[email protected] shell]# SEQ 10 | awk '! (i=!i) '

2

4

6

8

10


(3) SEQ 10 not after 4 lines

[[email protected] shell]# SEQ 10 | Head-n-4

1

2

3

4

5

6




This article is from the "It Life" blog, so be sure to keep this source http://dingxue.blog.51cto.com/12290895/1974369

awk && sed (4) ====linux The Three Musketeers of the awk command

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