提取父域/子域名

Question

我的URL列表如下：

http://example.com/sdfsdf/sdfsa 
https://example2.com/53lasfd/asdfs 
http://www.example3.com/asdfas/asdfasdf.php?=asdfa 
https://subdomain.example4.com/index.php?id=sadfa 
https://www.subdomain.example5.com/asdfas/asdfasd 

我需要在不http只提取域（和子域），https，www和所有/後：

exmaple.com 
exmaple2.com 
example3.com 
subdomain.example4.com 
subdomain.example5.com 

Answer 1

您可以使用awk，

awk -F/ '{sub(/^www\.?/,"",$3); print $3}' yourfile 

測試：

$ awk -F/ '{sub(/^www\.?/,"",$3); print $3}' yourfile 
example.com 
example2.com 
example3.com 
subdomain.example4.com 
subdomain.example5.com