How to get volume name of hard disc partition and usb key partition

Hello,

Any body knows how to get volume name of hard disc partition and usb key partition like MS Windows displays on my computer. Can't find for half a day. So maybe you, experts, know something?

Thank you
besideAsked:
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LuxanaCommented:
You can create label for device or display with command e2label

example :
create label
e2label /dev/hda2 name
display
e2label /dev/hda2
name

same it will be with usb ...
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LuxanaCommented:
check man page for e2label

# man e2label

./lubo
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besideAuthor Commented:
this doesn't work with fat filesystem...

e2label gives me:

e2label: Bad magic number in super-block while trying to open /dev/sda1
Couldn't find valid filesystem superblock.
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LuxanaCommented:
mkfs.vfat can set name for device with vfat

mkfs.vfat -n name /dev/hda2
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LuxanaCommented:
but do not use if you have already data on it.

-----------------------

when you use -v it will also display label name

this command set and display name for vfat
mkfs.vfat -v /dev/hda2 -n name
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besideAuthor Commented:
yes everything works except, how to view volume label without chaning it? :)

because:
mkfs.vfat -v /dev/hda2

doesn't display volume label
but if I use as you said mkfs.vfat -v /dev/hda2 -n name
then it show name, but it change label too.

How to view label without changing it?
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LuxanaCommented:
cfdisk will display volume name...

Depends on what distro you have you may need install cfdisk

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besideAuthor Commented:
I know that cfdisk displays volume name, but I need some automation, so cfdisk is not the choise. Maybe there command line tools for this?
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LuxanaCommented:
if you can determine label name and you need to automate something just create file with appropriate label names and drives. then just read this file ! what excactly do you need?
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besideAuthor Commented:
After booting system I want to check if connected usb key consist of fat32 partition and correct volume label (I expect for example "update" label). If yes, then I do something if not do something else. So I need command line tool that gets volume label for /dev/sda1.
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EinarThCommented:
here is a hacked up python script which works on my FAT32 formatted usb disk (there is no error handling there, but hey, what'ya expect for 100 pts ;) :
-----------------------------------
#!/usr/bin/env python

import sys

f = open(sys.argv[1], "r")
print f.read(128)[71:82]
f.close()
-----------------------

In short, I did a dd on the partition, found the index where the label start and I happen to know that fat volume labels are max 11 characters...

HTH
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besideAuthor Commented:
Thank you EinarTh, your method is working nicely :) just on my two usb keys Windows FAT32 partition label starts on 43 byte. I rewrited program on C and everything works great. Thank you one more time. And thanks to Luxana. I split the points.
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