dotfiles/tools/backup_sdcard

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#!/bin/bash
if [[ -z $1 ]]; then
echo "usage: $0 device_to_clone"
exit
fi
device=$1
timestamp=`date +%Y%m%d`
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dest_file="/tmp/$timestamp.dd.xz"
echo "about to clone $device to $dest_file"
echo "ctrl-c or [enter]"
read
sudo umount $device?
sudo umount $device
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sudo sync
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sudo pv -tpreb $device | dd bs=4M | pixz > $dest_file
sudo sync
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