sorting and obtaining specific text patterns

[ryand85]

Hi all,

I have a file and I need to extract just the website addresses as well as remove duplicates then output the result to a text file:

Resolving www.yippee.com... failed: Name or service not known.
Resolving www.yippee.com... failed: Name or service not known.
Resolving sadpenguin.org... failed: Name or service not known.
Resolving sadpenguin.org... failed: Name or service not known.
Resolving www.lada.com... failed: Name or service not known.
Resolving www.lada.com... failed: Name or service not known.
Resolving factoryindirect.ca... failed: Name or service not known.
Resolving factoryindirect.ca... failed: Name or service not known.

- The things i need to extract are: www.yippee.com, sadpenguin.org, www.lada.com, and factoryindirect.ca

- any help or suggestions would be awesome. Thanks!

[ghostdog74]

you had answers from a previous post of yours. Now, you try to do it yourself first, by at least reading up and practicing.

[anomie]

Since what you're trying to extract appears to be positional:
$ awk '{ print $2 }'

Simple. Then pipe that to sort. Then pipe that to uniq.

Some reading for you:

• awk
• bash