Improving user interface

- Adding a 'normal' mode and a 'verbose' mode of the script ! 
- Improving apparence of the script with less line show

StopNsurl.sh

@@ -1,7 +1,7 @@
 #! /bin/sh
 
 
-## Description
+## Description -----------
 
 # Anti nsurlsessiond for macOS
 # Looking for new 'nsurlsessiond' processus and killing it by getting his PID
@@ -10,14 +10,47 @@
 # 07/04/2017
 # @Farnots
 
-## Welcome pannel
+## Spinner function -----------
+
+# Source of the function : http://fitnr.com/showing-a-bash-spinner.html
+
+spinner()
+{
+	local pid=$!
+	local delay=0.4
+	local spinstr='|/-\'
+	while [ "$(ps a | awk '{print $1}' | grep $pid)" ]; do
+		local temp=${spinstr#?}
+		printf " [%c]  " "$spinstr"
+		local spinstr=$temp${spinstr%"$temp"}
+		sleep $delay
+		printf "\b\b\b\b\b\b"
+	done
+	printf "    \b\b\b\b"
+}
+
+
+## Welcome pannel -----------
+
 
 echo "+----------------------------------------+"
 echo "| Starting annihilation of nsurlsessiond |"
 echo "|        Made by Lucas Tarasconi         |"
 echo "+----------------------------------------+"
 
 
+## Testing verbose mode -----------
+
+verbose=0
+if [ $# -eq 1 ]; then
+	if [ $1 == "-v" ]; then
+		verbose=1
+	fi
+fi
+
+
+## Removing the tempory file when exiting -----------
+
 function quitting {
 	echo "\n"
 	echo "Removing tempory file"
@@ -28,18 +61,61 @@ function quitting {
 	exit 0
 }
 
+## Core of the script : kill all nsurlsession and show them -----------
 
-trap "quitting" SIGTERM SIGINT
+function killIt {
+	n=$(expr $line)
+	sudo kill $n
+}
 
-while [[ 1 ]]; do
-	echo "... Probing for new nsurlsessiond process ..."
+
+function speaking {
+	printf "\n"
+	killIt
+	current_time="`date +%H:%M:%S`"
+	printf $current_time;
+	printf " - killing nsurlsessiond number :  $n"
+}
+
+function killNsurl {
 	pgrep -x nsurlsessiond>./.nsurlsessiond
 	while read line ; do
-           n=$(expr $line)
-           echo "killing nsurlsessiond number :  $n"
-           sudo kill $n
-    done <./.nsurlsessiond
-	sleep 1;
+		if [ $verbose -eq 1 ] ; then
+			speaking
+		else 
+			killIt
+		fi
+	done <./.nsurlsessiond
+	if [ $verbose -eq 1 ] ; then
+		printf "\n"
+		printf "Probing for new nsurlsessiond process"
+	fi
+}
+
+## To avoid to use too many GPU just to kill processus -----------
+
+function waiting {
+	sleep 1
+}
+
+## While function -----------
+
+trap "quitting" SIGTERM SIGINT
+printf "Note : Password could be asked once to have the right to kill 'nsurlsessiond' \n"
+if [ $verbose -eq 1 ] ; then
+	printf "Probing for new nsurlsessiond process  "
+else
+	printf "Script is in progess ( '-v' to the verbose mode) : "
+fi
+sleep 1
+while [[ 1 ]]; do
+	pgrep -x nsurlsessiond>./.nsurlsessiond
+	if [ $? -eq 0 ]; then
+		killNsurl
+	else
+		waiting & spinner
+	fi
+
 done