net: monitor-wifi script

net/monitor-wifi.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# See wifi status with colors
+IF=wlan0
+
+# Colors (use echo -e to display)
+COLOR_BLACK='\e[0;30m';  COLOR_LBLACK='\e[1;30m';
+COLOR_RED='\e[0;31m';    COLOR_LRED='\e[1;31m';
+COLOR_GREEN='\e[0;32m';  COLOR_LGREEN='\e[1;32m';
+COLOR_YELLOW='\e[0;33m'; COLOR_LYELLOW='\e[1;33m';
+COLOR_BLUE='\e[0;34m';   COLOR_LBLUE='\e[1;34m';
+COLOR_PURPLE='\e[0;35m'; COLOR_LPURPLE='\e[1;35m';
+COLOR_CYAN='\e[0;36m';   COLOR_LCYAN='\e[1;36m';
+COLOR_NONE='\e[0m';
+
+/sbin/ifconfig $IF > /dev/null 2>&1
+E=$?
+if [ $E -ne 0 ]; then
+  echo "No such device: $IF - exiting"
+  exit 1
+fi
+
+while [ 1 ]; do
+    SPEED=`/sbin/iwconfig $IF | grep 'Bit Rate:' | cut -d':' -f2 | cut -d' ' -f1`
+    if [[ "$SPEED" == [0-9]* ]]; then SPEED=$SPEED' Mb/s'; else SPEED='-------'; fi
+    PWR=`/sbin/iwconfig $IF | grep 'Link Quality=' | cut -d= -f2 | cut -d/ -f1`
+    if [ "$PWR" == "" ]; then PWR=0; fi
+    if [ $PWR -gt 80 ]; then C=$COLOR_GREEN
+    else if [ $PWR -gt 60 ]; then C=$COLOR_LBLUE
+    else if [ $PWR -gt 40 ]; then C=$COLOR_CYAN
+    else if [ $PWR -gt 20 ]; then C=$COLOR_YELLOW
+    else if [ $PWR -gt 10 ]; then C=$COLOR_PURPLE
+    else C=$COLOR_RED; fi; fi; fi; fi; fi
+    echo -e "$C$PWR% $SPEED$COLOR_NONE"
+    sleep 1
+done