extract data from a large file in Linux

I have a file with thousands of email, names and addresses and so on I need to extract just the email address and pipe that to a new file.
What would be the easiest grep command to do so?

Regards,
Atorex
atorexAsked:
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woolmilkporcCommented:
grep -o -E "[^[:space:]]*@[^[:space:] ]*" inputfile | sort -u > outputfile

"sort -u" above is meant to remove duplicates.

wmp
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atorexAuthor Commented:
the below is what I get, its not getting just email addresses.


Brodner      0.0875      +37.76907      122.444      1      1      1      haight@gin.com      STORE      CALI      San
Byun      0.0925      +41.81192      87.6873      1      1      1      wickerpark@gin.com      STORE      CENTRAL      Chicago      en_US      USD            
Cruz      0.095      +47.43225      121.803      1      1      1      pikeplace@gin.com      STORE      NOWEST      Seattle      en_US      USD            
Cutler      0      +40.68494      73.9806      1      1      1      parkslope@gin.com      STORE      EAST      New
Dworkin      0.09      +33.78659      118.299      1      1      1      larchmont@gin.com      STORE      CALI      Los

Sample input file,

UPDATE      RETAIL_LOCATION      1031      1031      West Pearl      BLD-PERL      943 Pearl St                  Boulder      CO      80302      US                                          0.0836      40.017415      105.283      1      1      1      westpearl@gin.com      STORE      NOWEST      Boulder      en_US      USD
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woolmilkporcCommented:
It works perfectly for me using your data.

What is your OS, what do you get with "grep --version"?

Did you exactly use my code, including the "[:space:]" stuff I added later?
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atorexAuthor Commented:
Sorry My bad, didn't see the updated command, and that works perfectly.

thanks for the help.
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