Fix network status if no interfaces are present

1 files changed, 29 insertions, 19 deletions

diff --git a/bspwm/panel b/bspwm/panel
index a16448d..24bf33a 100755
--- a/bspwm/panel
+++ b/bspwm/panel
@@ -59,28 +59,38 @@ done &
 
 # Network throughput
 while :; do
-    net_info=$(
-        ip -4 -o addr show | grep -v ' lo ' |
-            while read line; do
-                iface=$(echo $line | cut -d ' ' -f 2);
-                addr=$(echo $line | cut -d ' ' -f 4 | sed 's/\/.*//');
+	net_info=$(
+		ip -4 -o addr show | grep -v ' lo ' |
+			while read line; do
+				iface=$(echo $line | cut -d ' ' -f 2);
+				# addr=$(echo $line | cut -d ' ' -f 4 | sed 's/\/.*//');
 
-                rf=/sys/class/net/eth0/statistics/rx_bytes;
-                tf=/sys/class/net/eth0/statistics/tx_bytes;
+				if [ ! -d /sys/class/net/$iface ]; then
+					sleep 1;
+					continue;
+				fi
 
-                # Get RX and TX bytes then sleep for ~1 second
-                r1=`cat $rf`;
-                t1=`cat $tf`;
-                sleep 1
+				rf=/sys/class/net/$iface/statistics/rx_bytes;
+				tf=/sys/class/net/$iface/statistics/tx_bytes;
 
-                # Get RX and TX bytes and print rates in KBPS
-                r2=`cat $rf`;
-                t2=`cat $tf`;
-                rr="$(((r2-r1)/1024))";
-                tr="$(((t2-t1)/1024))";
-                printf "$iface $addr %04.0f↓ %04.0f↑ " $rr $tr
-            done)
-    echo "N$net_info" > "$PANEL_FIFO"
+				# Get RX and TX bytes then sleep for ~1 second
+				r1=`cat $rf`;
+				t1=`cat $tf`;
+				sleep 1
+
+				# Get RX and TX bytes and print rates in KBPS
+				r2=`cat $rf`;
+				t2=`cat $tf`;
+				rr="$(((r2-r1)/1024))";
+				tr="$(((t2-t1)/1024))";
+				# printf "$iface $addr %04.0f↓ %04.0f↑ " $rr $tr
+				printf "$iface %04.0f↓ %04.0f↑ " $rr $tr
+			done)
+	if [ -z "$net_info" ]; then
+		sleep 5;
+	else
+		echo "N$net_info" > "$PANEL_FIFO"
+	fi
 done &
 
 #. ./panel_colors