On Mon, Aug 26, 2013 at 2:22 PM, Werner Flamme <werner.flamme@email.de> wrote:

[26.08.2013 19:14] [Greg Freemyer]:

...

All,

I have a script that gets to a line equivalent to:

echo $((0024748032 * 512))

It dies because it is interpreting that as octal (I assume).

How can I trim off the leading zeros?

Hi Greg,

I tried ${var##0}, but this did not work. It only eliminates one 0. So I tried to convince the bash that 0024748032 is a decimal number, and it worked:

MYVAR=0024748032 MYVAL=10#$MYVAR echo $((MYVAL * 512))

If the numbers are hardcoded, you can write echo $((10#0024748032 * 512)) and everything is fine, but I suspect that you use variables ;-)

Now I hope that you use bash...

Werner

Fantastic, thanks (and yes variables and bash both) fyi: 0024748032 is the starting sector of a partition. $((10#0024748032 * 512)) is the starting byte of a partition. So this command now dumps a list of NTFS shadow volumes in a partition: vshadowinfo -o $((10#$offset * 512)) /dev/sdb - offset comes from the output of mmls /dev/sdb and some bash manipulation - mmls comes from sleuthkit (in the main repo) vshadowinfo is new to factory. (zypper in libvshadow-tools) Then vshadowmount can be used to create virtual devices corresponding to the VSCs (volume shadow copies). Those in turn can be mounted loopback to access the files inside the VSCs. I suspect openSUSE 13.1 will be the first distro with that ability included! (I may be the only one who cares, but I'm pretty excited for that to be true.) Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org