Update install_unifi_with_nxrelay.sh

install_unifi_with_nxrelay.sh

@@ -11,7 +11,7 @@ disable_selinux(){
         sed -i /etc/selinux/config -r -e 's/^SELINUX=.*/SELINUX=disabled/g'
 }
 backup_unifi(){
-        cp -r /opt/UniFi /opt/UniFi_bkp_$(date +%d%m%Y)
+        cp -r /opt/UniFi /opt/UniFi_bkp_$(date +%d%m%Y_%H%M%S)
 }
 backup_nxrelay(){
         cp -r /nxrelay /nxrelay_bkp_$(date +%d%m%Y)