bash comman/bash script

Hello,

I have a file.txt that contains:
1@1.com
2@1.com
1111.com
2@1.com
2@1.com
3@1.com

I was wondering if it was possible to get all the valid emails from this txt file & no duplicates. The result should be written in results.txt
1@1.com
2@1.com
3@1.com

I think it can be done in one line with the "grep" command (http://www.computerhope.com/unix/ugrep.htm), but I don't know.

Any ideas?

Thanks a lot!
Cedric

 

 

 

 

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