sed/awk for matching & substituition

laikos · 09-21-2004, 10:42 PM

Hi,
I would like to write a sed or awk script to do conversion for
/proc/partitions information to format that is understoodable by most people

Code:

# cat /proc/partitions
major minor  #blocks  name     rio rmerge rsect ruse wio wmerge wsect wuse running use aveq
   8    48   17921835 scsi/host1/bus0/target2/lun0/disc 294 187 3818 1450 3 0 24 0 0 1440 1450
   8    49   17920476 scsi/host1/bus0/target2/lun0/part1 293 184 3810 1450 3 0 24 0 0 1440 1450
   8    64   17921835 scsi/host1/bus0/target3/lun0/disc 8537 3 68284 40720 1 0 8 0 0 17940 40720
   8    65   17920476 scsi/host1/bus0/target3/lun0/part1 8536 0 68276 40710 1 0 8 0 0 17930 40710
   8    80   17958274 scsi/host1/bus0/target4/lun0/disc 2077 31422 267956 68450 1 0 8 0 0 38700 68450
   8    81   17952606 scsi/host1/bus0/target4/lun0/part1 2076 31419 267948 68450 1 0 8 0 0 38700 68450

from this information I want to convert it to format such as

Code:

/dev/sda
/dev/sda1
/dev/sda2

In doing that I believe the code should be able to do conversion
[0..25] -> [a..z]

Thanks for your help

zefo · 11-22-2006, 10:00 AM

probably a bit outdated reply but cat /proc/partitions on my system (archlinux 7.2) is:

3 0 39483743 hda
3 1 394834 hda1
3 2 938493 hda2
.
.

so i think no filtering is needed.

Tinkster · 11-22-2006, 11:19 AM

Not only is this outdated, it doesn't match his system; he's is (was?)
using devfs on a Slackware machine.

Cheers,
Tink

jschiwal · 11-22-2006, 11:44 AM

Since sudo fdisk -l does the conversion already, perhaps:
sudo /sbin/fdisk -l | awk '/^\/dev/ {print $1}'

You could edit the sudoers file (with visudo normally) to use this oneliner.