commit b30f1f1e5ed3ccbf725b2aadbf23bfe77e5e1753
Author: Yann Weber <yann.weber@member.fsf.org>
Date:   Tue Jan 2 14:23:55 2018 +0100

    Initial commit

diff --git a/test.sh b/test.sh
new file mode 100755
index 0000000..54d6cb7
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,103 @@
+#!/bin/sh
+HOSTS_FILES="$HOME/.hosts_scanner"
+#HOSTS_FILES="/tmp/hosts"
+verbose=0
+res_file=$(mktemp -t hosts_scanner.XXXXXXXXXX)
+pids=""
+date_cmd="date --rfc-3339=s"
+
+lock="${res_file}.lock"
+
+clean_exit() {
+	echo "Ctrl+C pressed, exiting..."
+	for pid in $(echo $pids)
+	do
+		kill $pid
+		echo $pid killed
+	done
+	rmdir ${res_file}.lock 2>/dev/null
+	rm -v $res_file
+	exit 0
+}
+
+semlock() {
+	while [ 1 ]
+	do
+		mkdir $1 2>/dev/null && break
+	done
+}
+
+semrelease() {
+	rmdir $1
+}
+
+trap clean_exit 2
+
+upd_ping() {
+	# update ping stat file
+	# $1 host
+	# $2 file
+	# $3 lock
+	lock="$3"
+	last_up="never"
+	
+	while [ 1 ]
+	do
+		rep=$(ping -qc 1 $1 2>/dev/null  )
+		ret=$?
+		rep=$(echo $rep | sed -nE 's/.*rtt min\/avg\/max\/mdev = [0-9]+\.[0-9]+\/([0-9]+\.[0-9]+)\/.*$/\1/p')
+		rehost=$(echo $h|sed 's/\./\\./g')
+
+		semlock $lock
+
+
+		if [ $ret -eq 0 ]
+		then
+			last_up=$($date_cmd)
+			#echo "${res}$rep $hstr $last_up" >> $2
+		else
+			rep="down"
+			#echo "${res}down $hstr $last_up" >> $2
+		fi
+
+		sed -i "s/^\\s*$rehost\\s.*$/$(printf "%30s %8s %30s\n" $1 $rep "$last_up")/" "$2"
+
+		semrelease $lock
+
+		sleep 5
+	done
+}
+
+for h in $(cat "$HOSTS_FILES")
+do
+	printf "%30s %8s %30s\n" $h "unknw" "unknwn" >> $res_file
+done
+
+for h in $(cat "$HOSTS_FILES" )
+do
+	upd_ping $h $res_file $lock &
+	pid=$!
+	pids="${pids}\n$pid"
+	echo "$h updated by $pid" >&2
+done
+sleep 1
+
+while [ 1 ]
+do
+	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 " $res_file
+
+	sed -E -e "s/\snever$/$(tput sgr0)\0/" -e "s/^.* down .*$/$(tput setaf 1)\0$(tput sgr0)/"  $res_file
+
+	semrelease $lock
+	sleep 1
+done