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Shell Programming and Scripting

select a column

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# 1  
Old 06-16-2008
select a column
I've a file like this:

andrea andre@lol.com october
antonio@lol.com
marco 45247@pop.com
kk@pop.com may
pollo@lol.com
mary mary@lol.com

can I select only the column with email adress?

can I utilise a filter with @ ?

I want obtain this:

andre@lol.com,antonio@lol.com,45247@...,pollo@lol.com,mary mary@lol.com

Alfredo
# 2  
Old 06-16-2008
Code:
 cat infile | tr " " "\n" | grep @ 

or 

 cat infile | tr " " "\n" | grep @ | tr "\n" ","

Should be close to what you're after...
# 3  
Old 06-16-2008
@Tytalus: Beware of the Herder of Useless Cats! Smilie
Code:
tr " " "\n" < file.in | grep @ | tr "\n" "," > file.out

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