Update zabbix-install.sh

tweak

install/zabbix-install.sh

@@ -37,7 +37,7 @@ $STD sudo -u postgres psql -c "CREATE DATABASE $DB_NAME WITH OWNER $DB_USER ENCO
 $STD sudo -u postgres psql -c "ALTER ROLE $DB_USER SET client_encoding TO 'utf8';"
 $STD sudo -u postgres psql -c "ALTER ROLE $DB_USER SET default_transaction_isolation TO 'read committed';"
 $STD sudo -u postgres psql -c "ALTER ROLE $DB_USER SET timezone TO 'UTC'"
-$STD zcat /usr/share/zabbix-sql-scripts/postgresql/server.sql.gz | sudo -u $DB_USER psql $DB_NAME
+zcat /usr/share/zabbix-sql-scripts/postgresql/server.sql.gz | sudo -u $DB_USER psql $DB_NAME &>/dev/null
 sed -i "s/^DBName=.*/DBName=$DB_NAME/" /etc/zabbix/zabbix_server.conf
 sed -i "s/^DBUser=.*/DBUser=$DB_USER/" /etc/zabbix/zabbix_server.conf
 sed -i "s/^# DBPassword=.*/DBPassword=$DB_PASS/" /etc/zabbix/zabbix_server.conf