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#!/bin/bash
set -e
. /lib/recovery-mode/l10n.sh
# check if its there
if [ ! -x /usr/bin/apt-btrfs-snapshot ]; then
exit 1
fi
# check if its usable, if list returns a non-zero exit code,
# we probably run on a system with no snapshot support
if ! /usr/bin/apt-btrfs-snapshot list > /dev/null 2>&1; then
exit 1
fi
# if we make it to this point, show some help
if [ "$1" = "test" ]; then
echo $(eval_gettext "Revert to old snapshot and reboot")
exit 0
fi
# get snapshots and show them in whiptail
snapshots=$(apt-btrfs-snapshot list | sed 1d)
tag_item=""
for item in $snapshots; do
tag_item="$item snapshot $tag_item"
done
choice="$(whiptail --menu "$(eval_gettext "Snapshot")" 15 70 6 $tag_item \
3>&1 1>&2 2>&3 3>&-)"
# user selected cancel
if [ -z "$choice" ]; then
exit 0
fi
# set new snapshot and reboot
if apt-btrfs-snapshot set-default "$choice"; then
reboot
fi