[awk]how to remember groups in sub

oudoubah · 08-08-2006, 03:04 AM

Hello!

I've a config file like this :

Code:

[disks]
/dev/sda1 1 1275 83
/dev/sda2 1276 1406 82
/dev/sda3 1407 19929 8e
[swap]
...

My script have to read this file and use fdisk to recreate my partitions.

Here is my code with awk :

Code:

awk '/\[disks\]/ {
   getline ;
   while ($0 !~ /^\[.*/) {
      if ($0 != "" ) {
         device=$0;
         gsub(/(\/dev\/[^0-9]*)([0-9]+).*/, "device=\1=\2=", device) ;
         print device;
      }
      getline
}}' save.conf

Here is my result:

Code:

device===
device===
device===

I would like to separate the number of the partition and the device.
In my test, i would like to have:
device=/dev/sda=1
device=/dev/sda=2
device=/dev/sda=3

Is anyone could help me to understand my mistake?

Many thanks!

homey · 08-08-2006, 09:17 PM

If you're not just having to do some exercise, sfdisk can dump the partition table to a file which can then be restored.
For example:

Save the partition table...
sfdisk -d /dev/hda > hda.out

Resore the partition table
sfdisk /dev/hda < hda.out