Narrowing down an IP address match

[forrie]

This was discussed in:

thread822-1189907

I'm using FreeBSD-7.1-STABLE. I can't get grep to use boundaries like \< and \>.

I have a file, /etc/mail/access, that has IP addresses followed by tab, and configuration information. The format is like this:

11.22.33 SOME CONFIG DIRECTIVE

Now, what I'm trying to do is grep for a specific IP address, not similarities.

For example, grep will pick up:

11.22.33
11.22.3

From what I read, I should be able to do something simple like this:

grep '\<11\.22\.3\>' /etc/mail/access

or some variation thereof, and it does not work.

I'm really puzzled by this one. fgrep and it's relatives don't return the expected result, either.

Can someone point out what I'm missing here.

Thanks.

 

[PHV]

What about this ?

awk '$1=="11.22.3"' /etc/mail/access

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[forrie]

I should have been more specific. I have a script that, when passed a variable (which is an IP address), it takes the first 3 octets into a variable -- I expect(ed) grep to return a 0 (false) or 1 (true) if it exists in the file; if it doesn't, put it there.


Thanks.

 

[PHV]

So, what have you tried so far ?

 

[forrie]

I figured it out. The reference material I used wasn't very complete.

grep "11.22.33/>" filename