shell脚本面试题

AirManSix

1. [root@localhost ~]# cat b.txt
   
2. http://www.baidu.com/index.html
   
3. http://www.google.com/index.html
   
4. http://www.baidu.com/get.html
   
5. http://www.baidu.com/set.html
   
6. http://www.google.com/index.html
   
7. http://www.yahoo.com.cn/put.html
   
8. [root@localhost ~]# cut -d\/ -f3 b.txt |sort |uniq -c

复制代码

chnick2012

grep -oP '(?=www)[a-z].*(?<=com)' b.txt | sort |uniq -c

3 www.baidu.com
2 www.google.com
1 www.yahoo.com

by917611

grep -Po '(?<=http://)[\w.]+'|sort|uniq -c
cut -d"/" -f3 1|sort|uniq -c

by917611

sed 's/http:\/\/\(.*\)\/.*/\1/'|sort|uniq -c

s57445560

awk -F"/" '{a[$3]++}END{for(i in a)print i,a[i]}'