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please help, find domain names in string

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# 1  
Old 01-09-2009
Java please help, find domain names in string
Hello,

i have a file contains the information like below

/home/username/domain.com/log/access
/home/username/domain23.net/log/access
/home/reseller/username/domain.com/log/access

using a loop i can read every line of the file but i wants to extract domain name like(domain.com, domain23.net) from every line

please help me what is the easiest way to do so

Thanks
# 2  
Old 01-09-2009
Not sure if you will always have the string "domain" in your domains so I took the part where a dot is in the string between the slashes:

Code:
root@isau02:/data/tmp/testfeld> cat infile
/home/username/domain.com/log/access
/home/username/domain23.net/log/access
/home/reseller/username/domain.com/log/access
root@isau02:/data/tmp/testfeld> sed 's!.*\/\([^\/]*\.[^\/]*\)/.*!\1!' infile
domain.com
domain23.net
domain.com

# 3  
Old 01-09-2009
Assuming a "domain name" is a name that includes up to two dots, you could do:
Code:
while read line; do
   domain=`perl -e '$ARGV[0]=~ m:/(\w+\.\w+(\.\w+)?)/: && print $1,"\n"' $line`
   echo $domain
done

Here's a similar idea with awk:
Code:
 hostname=`echo  /home/username/domain23.net.au/log/access |
       awk 'BEGIN { RS="/"; } /[[:alnum:]]+\.[[:alnum:]](\.[[:alnum:]])?/'`

Note: If your domains contains dashes, you need to re-work the regular expression.

I'm looking forward to a solution using sed.
Last edited by otheus; 01-09-2009 at 06:10 AM.. Reason: ending backtick
# 4  
Old 01-09-2009
thank you so much. Zaxxon..

it helped me ... that's what i was looking for

Thanks again... you are guru
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