PREIN

/bin/sh

getent group sniproxy &>/dev/null || groupadd -r sniproxy
getent passwd sniproxy &>/dev/null || \
    /usr/sbin/useradd -r -g sniproxy -s /sbin/nologin -c sniproxy \
    -d / sniproxy

PREUN

/bin/sh

if [ $1 -eq 0 ] ; then 
        # Package removal, not upgrade 
        systemctl --no-reload disable --now sniproxy.service > /dev/null 2>&1 || : 
fi

POSTIN

/bin/sh

/usr/bin/systemd-tmpfiles --create sniproxy.conf 


if [ $1 -eq 1 ] ; then 
        # Initial installation 
        systemctl --no-reload preset sniproxy.service >/dev/null 2>&1 || : 
fi

POSTUN

/bin/sh

# fix empty %postun:
true