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matching repeated character

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# 1  
Old 12-13-2007
matching repeated character
looking for a bit of help with sed.

I have a file that looks a bit like this:
Code:
sdfghhjk
asdfdfghgj
asdfhgghj
werdfvtfh
edftbgh
1211211221
sdffgfm
dfghnhjm
dfvfsgbgh
adsfv bdhgn
1111111dffg
dfv1122
dsgvbghn111111
fffffffgbdghn
fffffff
sfgh3333gs vdf


I need to match any line that has a any character repeated more three or more times in a row.


so i need output like this:
Code:
1111111dffg
dsgvbghn111111
fffffffgbdghn
fffffff
sfgh3333gs vdf

# 2  
Old 12-13-2007
Wow!

I would do that in C, I'm sure plenty would do that in AWK.
# 3  
Old 12-13-2007
awk or sed is fine, i don't want to get in to C for this job.
# 4  
Old 12-13-2007
Code:
sed -n 's/\(.\)\1\1/&/p' myFile

# 5  
Old 12-13-2007
Quote:
Originally Posted by vgersh99
Code:
sed -n 's/\(.\)\1\1/&/p' myFile

dude you rock!!

thanks.
# 6  
Old 12-13-2007
Quote:
Originally Posted by vgersh99
Code:
sed -n 's/\(.\)\1\1/&/p' myFile

Nice,
or even:

Code:
grep '\(.\)\1\1'

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