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Shows the UUID of the given partition (here /dev/sda7). Doesn't need to be root.
There are 3 alternatives - vote for the best!
Shows the UUID of a filesystem or partition that can be used in kernel root options and in fstab.
Run it without the -u option to generate more information. eg:
~/ sudo vol_id /dev/sda2
Show the UUID-based alternate device names of ZEVO-related partitions on Darwin/OS X. Adapted from the lines by dbrady at http://zevo.getgreenbytes.com/forum/viewtopic.php?p=700#p700 and following the disk device naming scheme at http://zevo.getgreenbytes.com/wiki/pmwiki.php?n=Site.DiskDeviceNames
Doesn't need to be run as root.
If you can do better, submit your command here.
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