Shell Programming and Scripting

I have a .txt file with almost few hundreds interfaces address which need to be changed or mapped to the new interface naming convention. for e.g interface

xe-8/0/0 should be xe-16/0/0
xe-9/0/0 should be xe-17/0/0
it keeps going to xe-31/0/0 which should become xe-55/0/0.

i wanted to know how can i change to new naming convention using sed or awk or any other method?

appreciate any feedback.

Awk is probably the most suited for the need.

You should give more details about what the original file looks like.

I don't get it. The first two examples add 8 to the old name to get the new name. The last example adds 24??? Maybe you need to better explain the old and new naming conventions better.

Arithmetic and sed do not get along, but what is your naming algorythm? You went from +8 to +24. Consider ksh/bash, too.

Call me crazy, but this progression works in bash (integer math).

Code:

for xx in {8..31};
do
    if [ $xx -lt 10 ]; then
        echo "$(( $xx + 8 ))"
    else
        echo "$(( $xx + ( $xx / 10 * 8 )))"     ## int($xx/10)
    fi
done

i will try this later. thanks

Below is the snipet from configuration , as you can see :
xe-0/0/0 need to change it to xe-8/0/0.

Code:

set interfaces xe-0/0/0 
set interfaces xe-0/0/0 hold-time up 2000
set interfaces xe-0/0/0 hold-time down 0
set interfaces xe-0/0/0 gigether-options 802.3ad ae10
set interfaces xe-0/0/1 description DO-NOT-USE
set interfaces xe-0/0/2 description test
set interfaces xe-0/0/2 hold-time up 1000
set interfaces xe-0/0/2 hold-time down 0
set interfaces xe-0/0/2 unit 0 family inet filter input ingrees tea
set interfaces xe-0/0/2 unit 0 family inet address 1.1.1.1/30
set interfaces xe-0/0/3 description "Test"
set interfaces xe-0/0/3 hold-time up 1000
set interfaces xe-0/0/3 hold-time down 0
set interfaces xe-0/0/3 unit 0 family inet filter input INGRESS_SAMPLE
set interfaces xe-0/0/3 unit 0 family inet address 2.2.2.1/31
set interfaces xe-0/0/4 description "xe-0/0/1"
set interfaces xe-0/0/4 hold-time up 1000
set interfaces xe-0/0/4 hold-time down 0
set interfaces xe-0/0/4 gigether-options 802.3ad ae12
set interfaces xe-0/0/5 description DO-NOT-USE
set interfaces xe-0/0/6 description "Test"
set interfaces xe-0/0/6 hold-time up 1000
set interfaces xe-0/0/6 hold-time down 0

---------- Post updated at 07:36 PM ---------- Previous update was at 06:28 PM ----------

i am sorry guys, i need to do this in code....here you go guys.

set interfaces xe-0/0/0 set interfaces xe-0/0/0 hold-time up 2000 set interfaces xe-0/0/0 hold-time down 0 set interfaces xe-0/0/0 gigether-options 802.3ad ae10 set interfaces xe-0/0/1 description DO-NOT-USE set interfaces xe-0/0/2 description test set interfaces xe-0/0/2 hold-time up 1000 set interfaces xe-0/0/2 hold-time down 0 set interfaces xe-0/0/2 unit 0 family inet filter input ingrees tea set interfaces xe-0/0/2 unit 0 family inet address 1.1.1.1/30 set interfaces xe-0/0/3 description "Test" set interfaces xe-0/0/3 hold-time up 1000 set interfaces xe-0/0/3 hold-time down 0 set interfaces xe-0/0/3 unit 0 family inet filter input INGRESS_SAMPLE set interfaces xe-0/0/3 unit 0 family inet address 2.2.2.1/31 set interfaces xe-0/0/4 description "xe-0/0/1" set interfaces xe-0/0/4 hold-time up 1000 set interfaces xe-0/0/4 hold-time down 0 set interfaces xe-0/0/4 gigether-options 802.3ad ae12 set interfaces xe-0/0/5 description DO-NOT-USE set interfaces xe-0/0/6 description "Test" set interfaces xe-0/0/6 hold-time up 1000 set interfaces xe-0/0/6 hold-time down 0