03-20-2007
Hex Conversion
I need to have my scripts import volume groups and mknod devices files. I have most of the script working but the device file needs to be in the format 0x??0000 (where the question marks are my HEX representations of the volume group number. I have the code below and the output it produces which would work great except anything that is only one charater will not work (I.E "1" needs to be "01", "a" needs to be "0a"). Any suggestions? And I can't use any perl code.
#!/bin/sh
for y in vg01 vg02 vg03 vg10 vg21 vg22 vg23
do
printf "%#x\n" $(echo ${y} | sed 's/^vg//') | sed 's/0x//'
done
Output:
1
2
3
a
15
16
17
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LEARN ABOUT XFREE86
lvrename
LVRENAME(8) System Manager's Manual LVRENAME(8)
NAME
lvrename - rename a logical volume
SYNOPSIS
lvrename [-A|--autobackup {y|n}] [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--version] [-f|--force] [--noudevsync] {OldLogi-
calVolume{Name|Path} NewLogicalVolume{Name|Path} | VolumeGroupName OldLogicalVolumeName NewLogicalVolumeName }
DESCRIPTION
lvrename renames an existing logical volume from OldLogicalVolume{Name|Path} to NewLogicalVolume{Name|Path}.
OPTIONS
See lvm(8) for common options.
--noudevsync
Disable udev synchronisation. The process will not wait for notification from udev. It will continue irrespective of any possible
udev processing in the background. You should only use this if udev is not running or has rules that ignore the devices LVM2 cre-
ates.
EXAMPLE
To rename lvold in volume group vg02 to lvnew:
lvrename /dev/vg02/lvold vg02/lvnew
An alternate syntax to rename this logical volume is:
lvrename vg02 lvold lvnew
SEE ALSO
lvm(8), lvchange(8), vgcreate(8), vgrename(8)
Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) LVRENAME(8)