Add VPN to i3status.

.i3status.conf

@@ -4,20 +4,27 @@ general {
         interval = 5
 }
 
+order += "path_exists VPN"
 order += "load"
-order += "wireless wlan0"
-order += "ethernet eth0"
+order += "wireless wlp3s0"
+order += "ethernet enp4s0f2"
 order += "battery 0"
 order += "disk /"
 order += "tztime local"
 
 
-wireless wlan0 {
+path_exists VPN {
+        # path exists when a VPN tunnel launched by nmcli/nm-applet is active
+        path = "/proc/sys/net/ipv4/conf/tun0"
+}
+
+
+wireless wlp3s0 {
         format_up = "W: (%quality at %essid, %bitrate) %ip"
         format_down = ""
 }
 
-ethernet eth0 {
+ethernet enp4s0f2 {
         # if you use %speed, i3status requires the cap_net_admin capability
         format_up = "E: %ip (%speed)"
         format_down = ""
@@ -30,7 +37,7 @@ battery 0 {
 }
 
 tztime local {
-        format = "%Y-%m-%d %H:%M:%S"
+        format = "%Y-%m-%d %H:%M"
 }
 
 load {
@@ -38,5 +45,5 @@ load {
 }
 
 disk "/" {
-        format = "df %free"
+        format = "%free free"
 }