README.md

@@ -2,15 +2,9 @@
 
 Icinga2/Nagios check program for Raspberry Pi temperature
 
-## Requirements
-
-- `bc` for floating point calculation
-- Adding executing user to video group: `sudo adduser nagios video`. Otherwise "VCHI initialization failed"
-
 ## Arguments
 
 - `--warning 50`: Temperature above which the result is warning
 - `--critical 70`: Temperature above which the result is critical
 - `--fahrenheit`: All temperatures in Fahrenheit (°F)
 
-

check_rpi_temp.sh

@@ -4,12 +4,6 @@
 
 echoerr() { echo "$@" 1>&2; }
 
-if ! $(command -v bc); then
-	echoerr Please install bc
-	exit -2
-fi
-
-
 WARN=50
 CRIT=70
 FAHRENHEIT=false
@@ -18,14 +12,14 @@ while [[ $# -gt 0 ]]; do
 	case $1 in
 		-w|--warn|--warning)
 			case "$2" in
-				''|*[!0-9]*) echoerr "Value for \"$1\" has to be a number"; exit -3;;
+				''|*[!0-9]*) echoerr "Argument for \"$1\" has to be a number";;
 			esac
 			WARN=$2
 			shift; shift
 			;;
 		-c|--crit|--critical)
 			case "$2" in
-				''|*[!0-9]*) echoerr "Value for \"$1\" has to be a number"; exit -3;;
+				''|*[!0-9]*) echoerr "Argument for \"$1\" has to be a number";;
 			esac
 			CRIT=$2
 			shift; shift
@@ -51,7 +45,7 @@ done
 
 if [ $CRIT -le $WARN ]; then
 	echoerr "Critical threshold ($CRIT) has to be greater than Warning threshold ($WARN)"
-	exit -3
+	exit 1
 fi
 
 
@@ -74,10 +68,10 @@ fi
 temp=${output/temp=/}
 temp=${temp/\'C/}
 
-unit="'C"
+unit="°C"
 if $FAHRENHEIT; then
 	temp=$(bc <<< "scale=1; ($temp * 1.8) + 32")
-	unit="'F"
+	unit="°F"
 fi
 
 
@@ -91,7 +85,7 @@ elif [ $w -eq 1 ]; then
 else
 	result="OK"
 fi
-echo "$result. $temp$unit | 'temperature'=$temp;$unit;$WARN;$CRIT;-40;85"
+echo "$result | 'temperature'=$temp;$unit;$WARN;$CRIT;-40;85"
 
 
 case $result in