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That works, much thanks :)

Yeah, forgot to mention that I tried the [1-22] and it didn't work for me either. I am on a SunOS 5.10.

The sort command works, thanks for that. Unfortunately I will have to eventually parse very...

Hello all,

I would like a bit of help with a problem I am having. I have the following example file:

$ cat test_hosts
10.10.2.3 host1
10.10.2.4 host2
10.10.2.130 host3
10.10.2.5 host4...

Thanks guys, I understand now why I can't have 2 pipes after a tail -f.



You are right, the loop shoud do the trick. However, that "print $i" prints each word on a new line. So I tried this...

Nice, that works fine :-) Thanks. One more quick question: how would I print everything from the 7th field to the end of the line , in awk ? Something like cut's -f 7- .

It was just an example to illustrate a real-world problem that I have.

Basically I need to tail a syslog file, grep for a certain pattern then display a certain field from the matched line. What...

Hello all,

I have some weird problem that kinda baffles me. Say I have the following test file:

claudia:~/tmp$ cat testfile.txt
This is a test line
This is the second test line
And yeah,...

That works but I kinda need to use the \1, the IP address that I matched. The lines I am going to parse will be syslog entries, which contain IP addresses. I just need to tail the syslog, pipe it...

Ok, I just moved the first \( and now \1 is the whole pattern, I can replace it and it works :) Thanks for your help so far.

Now I need to do something else. I actually need to replace the IP...

I thought that is what's inside the (, ) but that does not encompasses the whole pattern.

I think I got it, I need to remove the \1 at the end.

It seems to work, it replaces the first byte of the IP:

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:...

I just tried something simple first, like matching the first number and replacing it with some text:

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

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...