Shell Programming and Scripting

I want to get a file together that lists router name and IP address of an interface together like so...

Code:

SOMERTR1A    10.10.10.20
SOMERTR1B    10.10.10.30
OTHRRTR1A    192.168.1.120

The file I'm trying to extract the text from looks like the below:

Code:

SOMERTR1A#show run int Lo0 | i add
 ip address 10.10.10.20 255.255.255.255
SOMERTR1B#show run int Lo0 | i add
 ip address 10.10.10.30 255.255.255.255
OTHRRTR1A#show run int Lo0 | i add
 ip address 192.168.1.120 255.255.255.255

Moderator's Comments:

Video tutorial on how to use code tags in The UNIX and Linux Forums.

I believe this will take using sed and/or awk in some way but am not certain. I have very limited working knowledge of both and am trying to practice using them more with examples like the above. I've searched briefly tonight but thought I would throw up a post before going to bed and picking this up tomorrow.

Try..

Code:

awk -F "[ #]" /#show/'{router=$1} /^ip address/ {print router,$3}'  file

Output:

Code:

SOMERTR1A 10.10.10.20
SOMERTR1B 10.10.10.30
OTHRRTR1A 192.168.1.120

Please note this works only if the patterns are exactly same as you posted in the sample.

Code:

$ awk '/#/{split($1,a,"#");r=a[1]}/ip address/{print a[1],$3}' a.txt 
SOMERTR1A 10.10.10.20
SOMERTR1B 10.10.10.30
OTHRRTR1A 192.168.1.120

Code:

sed 'N;s/#.*address\|255.255.255.255//g' infile

Thanks for the replies. I tried all three and itkamaraj's solution worked!

clx - when attempting your solution, I received the following result:

Code:

awk: syntax error near line 1
  awk: bailing out near line 1

Either it wasn't quite right or perhaps the example strings I provided, on which you used to provide your suggestion, were not a close enough resemblance to the actual file. Either way, thanks for the response as it gives me another way to look at it and maybe play around a bit. I am just about following along close enough to understand what your suggestion was attempting to do.

huaihaizi3 - your solution seems to have printed out the entire file as if I used "cat filename". Thanks to you as well. I don't understand sed really at all yet but will hopefully start spending a bit more time with it here shortly.

On Solaris use /usr/xpg4/bin/awk rather than awk