PREIN

/bin/sh

getent group chrony > /dev/null || /usr/sbin/groupadd -r chrony
getent passwd chrony > /dev/null || /usr/sbin/useradd -r -g chrony \
       -d /var/lib/chrony -s /sbin/nologin chrony
:

PREUN

/bin/sh

if [ "$1" -eq 0 ]; then
        /bin/systemctl --no-reload disable \
                chrony-wait.service chronyd.service &> /dev/null
        /bin/systemctl stop chrony-wait.service chronyd.service &> /dev/null
        /sbin/install-info --delete /usr/share/info/chrony.info.gz \
                /usr/share/info/dir &> /dev/null
fi
:

POSTIN

/bin/sh

/bin/systemctl daemon-reload &> /dev/null
/sbin/install-info /usr/share/info/chrony.info.gz /usr/share/info/dir &> /dev/null
:

POSTUN

/bin/sh

/bin/systemctl daemon-reload &> /dev/null
if [ "$1" -ge 1 ]; then
        /bin/systemctl try-restart chronyd.service &> /dev/null
fi
:

Triggers

chrony < 1.25

/bin/sh

if /sbin/chkconfig --level 3 chronyd; then
        /bin/systemctl enable chronyd.service &> /dev/null
fi
: