PREUN

/bin/sh

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

POSTIN

/bin/sh

if [ $1 -eq 1 ] ; then 
    # Initial installation 
    /bin/systemctl daemon-reload >/dev/null 2>&1 || :
fi

POSTUN

/bin/sh

/bin/systemctl daemon-reload >/dev/null 2>&1 || :
if [ $1 -ge 1 ] ; then
    # Package upgrade, not uninstall
    /bin/systemctl try-restart wpa_supplicant.service >/dev/null 2>&1 || :
fi

Triggers

wpa_supplicant < 0.7.3-10

/bin/sh

# Save the current service runlevel info
# User must manually run systemd-sysv-convert --apply wpa_supplicant
# to migrate them to systemd targets
/usr/bin/systemd-sysv-convert --save wpa_supplicant >/dev/null 2>&1 ||:

# Run these because the SysV package being removed won't do them
/sbin/chkconfig --del wpa_supplicant >/dev/null 2>&1 || :
/bin/systemctl try-restart wpa_supplicant.service >/dev/null 2>&1 || :