Shell Programming and Scripting

I tried below but it is giving error.

Code:

sed "s/^abcd.com\(.*\)A\(.*\)\$/^abcd.com\1A\2/15\.1\.1\.10$" abcd.com

So you want to change 15.1.1.1 to 15.1.1.10 and 151.100.151.100 to 151.100.151.200? Try (untested)

Code:

sed "/^abcd\.com/s/15\.1\.1\.1$/15.1.1.10/; /^server\.abcd\.com/s/151\.100\.151\.100$/151.100.151.200/" abcd.com

Yes true, but i have one question, for first and second both record you are breaking source ip address in block while target ip address you are not breaking... why?

---------- Post updated at 04:37 PM ---------- Previous update was at 04:32 PM ----------

One more thing, how i can add increment in serial number.

current serial number

Code:

2006080401

target serial number

Code:

2006080402

I have tried this

Code:

x=2006080401

output=`expr $x + 1`

echo $output
2006080402

But problem is that i am hardcoding the serial number, is it possible i can grep the only serial number directly and only increment in last two digit.

Serial number format is this.

Code:

2006080401	; serial

In sed's s(ubstitute) comamnd, the first term is a regex so you need to escape the dots (if you want to be very accurate), while the second is just plain text (except for e.g. \n).
If you want to do arithmetics, you'd be better off utilising tools like awk or perl, where you can modify the IPs as well as serial No.s in one single script.

Please can you give me any example of awk or perl, how i can achieve that?

I really didn't understand your requirement,

Please explain us clearly..

@ Don Cragun :
you might remember we have seen same kind of issue in last post also.. he didn't tell us clearly what is need to be done.



Changes of text in a file | Unix Linux Forums | Shell Programming and Scripting

I agree to what others say: show us your efforts, and we'll be glad to help. First effort would be to compose a clear and unambiguous specification of what you need and where you come from. This effort would be rewarding by increasing chances for yourself to solve the problem on your own.
Try to search these fora for examples of using awk to perform some arithmetics. But be aware that your desire is not to just increase a "serial number" but that this serial number has some structure (YYMMDDNN) to it: What should happen if NN exceeds 99? What if you modify a file that was last modified yesterday? last month? year?