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sed on SunOS 5.10


 
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# 1  
Old 02-28-2008
sed on SunOS 5.10

Hello all,

I am having some problems using sed on a sunOS 5.10, I am using bash. For some reason the regexp I am trying to build is not working, even though it should.

I am trying to parse some syslog messages and I need to match the first IP address , then replace it with something else. Does anyone have a quick example of a sed line to match and replace an IP address ?

Thanks,
Sylaan
# 2  
Old 02-28-2008
Show us the sed statement you have.
# 3  
Old 02-28-2008
I just tried something simple first, like matching the first number and replacing it with some text:

Code:
server:~$ echo "This is an IP: 172.10.10.3 " | sed  -e "s/([01]?\d\d)/TEST/g"
This is an IP: 172.10.10.3

But it's not really working. What am I doing wrong ? This is the sed I am using:

Code:
server:~$ which sed
/usr/xpg4/bin/sed

# 4  
Old 02-28-2008
Quote:
Originally Posted by sylaan
I just tried something simple first, like matching the first number and replacing it with some text:

Code:
server:~$ echo "This is an IP: 172.10.10.3 " | sed  -e "s/([01]?\d\d)/TEST/g"
This is an IP: 172.10.10.3

[/CODE]
What is ([01]?\d\d) ? That has a Perl resemblance.

Try this one
Code:
sed -e "s/[0-9]\{1,3\}\(\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\)/TEST\1/g"

[0-9]\{1,3\} is used to match numbers from 1 to 999
\. is used to match a '.'
# 5  
Old 02-28-2008
It seems to work, it replaces the first byte of the IP:
Code:
server:~$ echo "This is an IP: 3.10.10.3" | sed -e "s/[0-9]\{1,3\}\(\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\)/TEST\1/g"
This is an IP: TEST.10.10.3

How would I go about replacing the whole IP ?
# 6  
Old 02-28-2008
Quote:
Originally Posted by sylaan
It seems to work, it replaces the first byte of the IP:
Code:
server:~$ echo "This is an IP: 3.10.10.3" | sed -e "s/[0-9]\{1,3\}\(\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\)/TEST\1/g"
This is an IP: TEST.10.10.3

How would I go about replacing the whole IP ?
How do you think that can be done ? Any tries ? I have explained what the regex is.
# 7  
Old 02-28-2008
I think I got it, I need to remove the \1 at the end.

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