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how to grep a subdomain

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Top Forums Shell Programming and Scripting how to grep a subdomain
# 1  
Old 07-24-2009
Data how to grep a subdomain

When I try to grep a subdomain having three dots("."), I am getting another fully qualified domain also that looks same as the sub domain but with hyphen("-") in the place of dot(".")

I just need the first result. Please help me...

HTML Code:
grep /etc/named.conf

zone "" {
        file "/var/named/";
zone "" {
        file "/var/named/";
# 2  
Old 07-24-2009
grep 'abcd\.efg\.xyz\.info' /etc/named.conf

# 3  
Old 07-24-2009
try the subdomain in quotes..

grep "abcd\.efg\.xyz\.info" /etc/named.conf
# 4  
Old 07-24-2009
is there any other way? b'cos I am writing a script to search duplicate zone entries in the named.conf file. The script first makes a list of domains in the zone file and then searches for duplicate entries.
# 5  
Old 07-24-2009
So which part isn't working? You haven't explained why the solutions provided wouldn't work.
# 6  
Old 07-24-2009
I am looking for a solution without editing the domain names. i.e. with out adding "\" in the middle.
# 7  
Old 07-24-2009

The problem is that the '.' is a wild-card in regular expressions and will be interpreted as any possible character. In your case you wanted the dot '.' specifically in which it needed to be escaped.

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