linux 三剑客老大-awk

1，取指定行的指定列

[[email protected] oldboy]# cat aa.txt
1 a
2 b
3 c
4 d
5 e
6 f
7 g
8 h
9 i
10 j
11 k
12 l
13 m
14 n

[[email protected] oldboy]# awk ‘{if(NR>=5 && NR<=10) print $1}‘ aa.txt#me：NR代表行号，&&代表并且
5
6
7
8
9
10
[[email protected] oldboy]# awk ‘{if(NR>=5 && NR<=10) print $2}‘ aa.txt  
e
f
g
h
i
j