diff --git a/unitests.sh b/unitests.sh
index 2d72a2f..b259faf 100644
--- a/unitests.sh
+++ b/unitests.sh
@@ -49,6 +49,16 @@ cd $(dirname $0)
 	BASH_LOG="$CURRENT_D/logs/bash_log.txt"
 	MINISHELL_LOG="$CURRENT_D/logs/minishell_log.txt"
 
+# check ROOT access :
+	ROOT=$( whoami )
+	if [ "$ROOT" == "root" ]
+	then
+	    ROOT=1
+	else
+	    ROOT=0
+	fi
+
+
 # default list of files to be use
 	DEFAULT_FILES="$( find $DEFAULT_DIR | tail -n+2 )"
 	DEFAULT_FILES_USAGE="$( find $DEFAULT_DIR_USAGE | tail -n+2 )"
@@ -147,7 +157,8 @@ cd $(dirname $0)
 	}
 
 # if print option, print next command
-	function print_next_command
+# receive parameters : $1 text presenting command, $2 command itself, $3 color for text
+	function print_command
 	{
 		text=$1
 		cmd=$2
@@ -158,64 +169,138 @@ cd $(dirname $0)
 		echo -e $ENDCO
 	}
 
-# function that will launch the command in bash and minishell and compare them
-	function test_minishell
+# compare the execution output and mark and print the success or failure
+# receive parameters : $1 bash execution output, $2 minishell execution output
+	function compare_output
 	{
-		# execute commands in bash, and logs results
-		bash_execution=$( echo "$@" | bash -i 2>/dev/null )
-		rm -rf $CURRENT_D/tmp/*
-		minishell_execution=$( echo "$@" | $CURRENT_D/minishell 2>/dev/null )
-		rm -rf $CURRENT_D/tmp/*
-
-		# for env, special treatment
-		bash_execution="$( echo "$bash_execution" | sort | grep -v -e "LINES=" -e "COLUMNS=" -e "_=" -e"LESSCLOSE=" -e "LESSOPEN=" )"
-		minishell_execution="$( echo "$minishell_execution" | sort | grep -v -e "LINES=" -e "COLUMNS=" -e "_=" -e"LESSCLOSE=" -e "LESSOPEN=" )"
-
-		#compare output
-		if [ "$bash_execution" = "$minishell_execution" ]
+		bash_output="$1"
+		minishell_output="$2"
+		if [ "$bash_output" = "$minishell_output" ]
 		then
 			(( SUCCESS_TEST++ ))
 			(( TOTAL_SUCCESS++ ))
-		# if uncommented, print all commands in case of option -p
-		#	if [ $PRINT -eq 1 ]
-		#	then
-		#		success_cmd="success line $(( $LINE_NUMBER - 1 )), command : "
-		#		print_next_command "$success_cmd" "$@" "$CYAN"
-		#	fi
 		else
+			# print failed commands in case of option -p
 			if [ $PRINT -eq 1 ]
 			then
 				failure_cmd="FAILURE line $(( $LINE_NUMBER - 1 )), command : "
-				print_next_command "$failure_cmd" "$@" "$MAGENTA"
+				print_command "$failure_cmd" "$@" "$MAGENTA"
 			fi
 			# print simple log
 			echo -e $B_WHITE"\n\n$@\n-----------"$ENDCO >>$BASH_LOG
-			echo "$bash_execution" >> $BASH_LOG
+			echo "$bash_output" >> $BASH_LOG
 			echo -e $B_WHITE"\n\n$@\n-----------"$ENDCO >>$MINISHELL_LOG
-			echo "$minishell_execution" >> $MINISHELL_LOG
+			echo "$minishell_output" >> $MINISHELL_LOG
 		fi
 	}
 
+# WIP
+# function that send the command to fd-0
+	function send_command
+	{
+		# find pid of programm (in a loop in case it didn't start already)
+		PID=""
+		while [ -z "$PID" ]
+		do
+		    PID="$( pidof minishell )"
+		done
+		
+		#VAR="\4"
+		#kill -s INT `pidof minishell`
+		while read -r line
+		do
+			printf "${line}\n" | ./tiocsti >/proc/"$PID"/fd/0
+			#printf "$VAR" | ./tiocsti >/proc/"$PID"/fd/0
+		done < <(echo "$CONCAT")
+		
+		# kill the process when programm is done
+		FINISH=0
+		while [ ! "$FINISH" -eq 1 ]
+		do
+		    kill -0 "$PID" 2>/dev/null
+		    FINISH=$( echo $? )
+		done
+	}
+
+# function test minishell in script mode, it cannot handle signals and ctrl-d
+	function test_minishell_interactif
+	{
+		# in this order, so that it's not the minishell or bash that goes in background
+		bash_execution=$( send_command & bash 2>/dev/null )
+		rm -rf $CURRENT_D/tmp/*
+		minishell_execution=$( send_command & $CURRENT_D/minishell 2>/dev/null )
+		rm -rf $CURRENT_D/tmp/*
+	}
+
+# function test minishell in script mode, it cannot handle signals and ctrl-d
+# receive parameters : $1 commands to execute, $2 name of the file
+	function test_minishell_script
+	{
+		bash_execution=$( echo "$commands" | bash 2>/dev/null )
+		rm -rf $CURRENT_D/tmp/*
+		minishell_execution=$( echo "$commands" | $CURRENT_D/minishell 2>/dev/null )
+		rm -rf $CURRENT_D/tmp/*
+	}
+
+# function that will launch the command in bash and minishell and compare them
+# receive parameters : $1 commands to execute, $2 name of the file
+	function test_minishell
+	{
+		commands="$1"
+		in_file="$2"
+		bash_execution=""
+		minishell_execution=""
+
+		# execute commands, and logs results
+		if [ "$ROOT" -eq 1 ]
+		then
+			test_minishell_interactif
+		else
+			test_minishell_script
+		fi
+
+		# for env, special treatment
+		if [ "${in_file: -6}" == "env.sh" ]
+		then
+			bash_execution="$( echo "$bash_execution" | sort | grep -v -e "LINES=" -e "COLUMNS=" -e "_=" -e"LESSCLOSE=" -e "LESSOPEN=" )"
+			minishell_execution="$( echo "$minishell_execution" | sort | grep -v -e "LINES=" -e "COLUMNS=" -e "_=" -e"LESSCLOSE=" -e "LESSOPEN=" )"
+		fi
+
+		compare_output "$bash_execution" "$minishell_execution"
+	}
+
 # function to print the results
-# receive parameters : file name, numerator, denominator
+# receive parameters : $1 file name, $2 numerator, $3 denominator
 	function print_results
 	{
-		echo -en $B_WHITE"results for $1 : "$ENDCO
-		if [ $2 -eq 0 ]
+		the_file="$1"
+		successful_test="$2"
+		num_of_test="$3"
+		echo -en $B_WHITE"results for "$the_file" : "$ENDCO
+		if [ "$successful_test" -eq 0 ]
 		then
-			echo -en $B_RED $2 $ENDCO
-		elif [ $2 -eq $3 ]
+			if [ "$num_of_test" -eq 0 ]
+			then
+				echo -en $B_WHITE "$successful_test" $ENDCO
+			else
+				echo -en $B_RED "$successful_test" $ENDCO
+			fi
+		elif [ "$successful_test" -eq "$num_of_test" ]
 		then
-			echo -en $B_GREEN $2 $ENDCO
+			echo -en $B_GREEN "$successful_test" $ENDCO
 		else
-			echo -en $B_MAGENTA $2 $ENDCO
+			echo -en $B_MAGENTA "$successful_test" $ENDCO
 		fi
-		echo -e $B_WHITE"/ $3"$ENDCO
+		echo -e $B_WHITE"/ "$num_of_test""$ENDCO
 	}
 
 # function that read the commands of each file
+# receive parameters : $1 file name, $2 last line number
 	function read_commands
 	{
+		file="$1"
+		last_line="$2"
+		command_test=""
 		while read -r line
 		do
 			(( LINE_NUMBER++ ))
@@ -233,11 +318,11 @@ cd $(dirname $0)
 						command_test+="$line"
 					fi
 					# if last line of file, execute here or else next loop will loose it
-					if [ $LINE_NUMBER -eq $last_line_number ]
+					if [ $LINE_NUMBER -eq $last_line ]
 					then
 						(( UNIT_TEST++ ))
 						(( TOTAL_TEST++ ))
-						test_minishell "$command_test"
+						test_minishell "$command_test" "$file"
 					fi
 				fi
 			# execute (concatenated) commands
@@ -245,10 +330,10 @@ cd $(dirname $0)
 			then
 				(( UNIT_TEST++ ))
 				(( TOTAL_TEST++ ))
-				test_minishell "$command_test"
+				test_minishell "$command_test" "$file"
 				command_test=""
 			fi
-		done < $filename
+		done < $file
 	}
 
 # the main loop: go through the files and call the compare func on each commands
@@ -260,7 +345,6 @@ cd $(dirname $0)
 		do
 			filename=$i
 			echo -e "\n"$B_YELLOW"test file : ${filename##*/}"$ENDCO
-			command_test=""
 			LINE_NUMBER=0
 			last_line_number=$(wc -l < $filename)
 			UNIT_TEST=0
@@ -268,7 +352,7 @@ cd $(dirname $0)
 			# write name of file in log files
 			echo -en $B_YELLOW "\n\n\nfile: ${filename##*/}\n" $ENDCO >>$BASH_LOG
 			echo -en $B_YELLOW "\n\n\nfile: ${filename##*/}\n" $ENDCO >>$MINISHELL_LOG
-			read_commands
+			read_commands "$filename" "$last_line_number"
 			# '##' print from the right untill... '*/' s slash
 			print_results ${filename##*/} $SUCCESS_TEST $UNIT_TEST
 		done