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some sed help needed

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Top Forums Shell Programming and Scripting some sed help needed
# 1  
Old 04-12-2012
some sed help needed
I have file with following contents;

Code:
127.0.0.1 www.google.com
127.3.3.1 www.cisco.com
127.3.5.1 www.msnbc.com

I want output as

Code:
127.0.0.1 www.google.com      google.com
127.3.3.1 www.cisco.com       cisco.com
127.3.5.1 www.msnbc.com       msnbc.com

I tried
Code:
sed 's/www.//g' filename

and was able to remove www part i am not getting the end results...

how to fix it ?

Moderator's Comments:
Mod Comment Please use code tags, thanks!
Last edited by sangfroid; 04-12-2012 at 12:11 PM.. Reason: code tags, see PM
# 2  
Old 04-12-2012
In what way does it not do what you want?
# 3  
Old 04-12-2012
i needed hostname with www and without www along with their ip in the same line as
Code:
127.0.0.1 www.google.com      google.com
127.3.3.1 www.cisco.com       cisco.com
127.3.5.1 www.msnbc.com       msnbc.com

# 4  
Old 04-12-2012
Try something like :

Code:
sed "s#\([[:alnum:]]\{1,50\}\.com\)#& \1#g"  inputfile

# 5  
Old 04-12-2012
Code:
sed 's/www\.\(.*\)/&\t\1/' file

(& in the replacement string represents the text that matched the entire regex, \1 is the text that matched the first \(...\) expression)
# 6  
Old 04-12-2012
Thanks a lot... now i got it...

you are matching www. and the rest for back reference and then printing backreferenced one and original one...

am i correct ?


hmm

cool..
thanks a lot
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