Find which service was used by which port number

cat /etc/services | egrep [[:blank:]]<port_number>/
Apply to almost linux distroes.
Sample Output
[email protected]:~$ cat /etc/services  | egrep [[:blank:]]25/
smtp		25/tcp		mail

By: xutale
2010-11-25 08:04:31

2 Alternatives + Submit Alt

What Others Think

1. you don't need cat: egrep [[:blank:]]/ /etc/services 2. the regex could be a bit shorter (port_nr=110): egrep '\ -or- egrep '\b110/' /etc/services 3. You don't have to use egrep with the shorter version: grep '\
unefunge · 505 weeks and 4 days ago
The less-thans were removed from the comment. I'll post "my commands" as alternatives.
unefunge · 505 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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