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#!/bin/sh
PREFIX=
. "$PREFIX/lib/libalpine.sh"
usage() {
cat <<-__EOF__
usage: setup-ntp [-h] [-c choice of NTP daemon]
Setup NTP time synchronization
options:
-h Show this help
-c Choice of NTP daemon: busybox openntpd chrony none
__EOF__
exit 1
}
while getopts "hc:" opt; do
case $opt in
c) resp="$OPTARG";;
h) usage;;
esac
done
while ! isin "$resp" busybox openntpd chrony none abort; do
ask "Which NTP client to run? ('busybox', 'openntpd', 'chrony' or 'none')" chrony
done
pkgs="$resp"
case "$resp" in
none|abort)
exit 0
;;
busybox)
pkgs=''
svc=ntpd
;;
chrony)
if apk info --installed --quiet acf-core; then
pkgs="$pkgs acf-chrony"
fi
svc=chronyd
;;
openntpd)
svc=openntpd
;;
esac
[ -z "$pkgs" ] || apk add --quiet $pkgs
rc-update add $svc default
rc-service $svc start
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