只查看xilong.txt[共100行]内第20行到第30行的内容

1: Test Environment

[root@xilong startimes]# seq 100 > xilong.txt 
[root@xilong startimes]# cat xilong.txt 

2: head + tail

[root@xilong startimes]# head -30 xilong.txt | tail -11

3: sed -n '20,30p' xilong.txt

[root@xilong startimes]# sed -n '20,30p' xilong.txt 

4: awk

[root@xilong startimes]# awk 'NR==20,NR==30' xilong.txt 

5:awk

[root@xilong startimes]# awk 'NR>=20 && NR<=30' xilong.txt

6:grep

[root@xilong startimes]# grep -A10 "20" xilong.txt  
[root@xilong startimes]# grep -B10 "30" xilong.txt 
[root@xilong startimes]# grep -C5 "25" xilong.txt