Adds argument parser allowing to give a configuration file as argument

ping_radar.sh

@@ -17,7 +17,6 @@
 alias echo='/bin/echo -e'
 
 REFRESH=2
-HOSTS_FILES="$HOME/.hosts_scanner"
 verbose=0
 res_file=$(mktemp -t hosts_scanner.XXXXXXXXXX)
 date_cmd="date --rfc-3339=s"
@@ -69,8 +68,6 @@ semrelease() {
 	rmdir $1
 }
 
-trap clean_exit 2
-
 upd_ping() {
 	# update ping stat file
 	# $1 host
@@ -168,6 +165,33 @@ cidr_scan() {
 	done
 }
 
+usage() {
+	echo "Usage : $0 [-c CONFIG_FILE] [-i HOST [-i HOST [...]]]" >&2
+}
+
+while getopts c:i: o
+do
+	case $o in
+	c)
+		HOSTS_FILES="$OPTARG";;
+	*)	usage; exit 1;;
+	esac
+done
+
+if [ -z "$HOSTS_FILES" ]
+then
+	HOSTS_FILES="$HOME/.hosts_scanner"
+fi
+
+if [ ! -f "$HOSTS_FILES" ]
+then
+	echo "File '$HOSTS_FILES' not found" >&4
+	usage
+	exit 2
+fi
+
+trap clean_exit 2
+
 # prepopulate file
 for h in $(cat "$HOSTS_FILES")
 do
@@ -193,24 +217,33 @@ do
 done
 sleep 1
 
+loop_count=0
 while [ 1 ]
 do
 	#sleep 1
 	#continue
 
 	semlock $lock
-	clear
-	echo "Ping radar $($date_cmd)\n"
-	printf "%30s %8s %30s\n" "host" "ping" "last up"
-	for i in $(seq 70); do echo -n "="; done
-	echo ""
-
-	#cat $res_file
-
-	#grep -v " down " $res_file
-	#grep " down " $res_file
+	#clear
+	loop_count=$(expr $loop_count + 1)
+	if [ $loop_count = "5" ]
+	then
+		clear;
+		loop_count=0
+	fi
+	echo -e "\x1B[0;0HPing radar $($date_cmd)\n$(printf "%30s %8s %30s\n" "host" "ping" "last up")\n$(for i in $(seq 70); do echo -n "="; done)\n$(sed -E -e "s/\snever$/$(tput sgr0)\0/" -e "s/^.* down .*$/$(tput setaf 1)\0$(tput sgr0)/"  $res_file)"
 
-	sed -E -e "s/\snever$/$(tput sgr0)\0/" -e "s/^.* down .*$/$(tput setaf 1)\0$(tput sgr0)/"  $res_file
+#	echo "Ping radar $($date_cmd)\n"
+#	printf "%30s %8s %30s\n" "host" "ping" "last up"
+#	for i in $(seq 70); do echo -n "="; done
+#	echo ""
+#
+#	#cat $res_file
+#
+#	#grep -v " down " $res_file
+#	#grep " down " $res_file
+#
+#	sed -E -e "s/\snever$/$(tput sgr0)\0/" -e "s/^.* down .*$/$(tput setaf 1)\0$(tput sgr0)/"  $res_file
 
 	semrelease $lock
 	sleep $REFRESH