PREIN

/bin/sh

# Add the "jetty" user and group
getent group  jetty &>/dev/null || groupadd -r -g 110 jetty || :
getent passwd jetty &>/dev/null || useradd  -r -u 110 -g jetty \
                             -d /usr/share/jetty -M -s /sbin/nologin jetty || :

PREUN

/bin/sh

/usr/share/rpm-helper/del-service jetty $1 jetty

POSTIN

/bin/sh

/usr/bin/systemd-tmpfiles --create jetty.conf 
/usr/share/rpm-helper/add-service jetty $1 jetty

POSTUN

/bin/sh

# Remove the user even during upgrade, it will be added later in %post.
# This is required to force incorrect UID to be replaced with the new one.
userdel  jetty &>/dev/null || :
groupdel jetty &>/dev/null || :