BUG: fix selftester.sh script (lines starting with a space)

Packaging/Files/selftester.sh

@@ -31,6 +31,11 @@ ps_children () {
   ps -e -o pid -o command=COMMAND-WIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIDE-COLUMN -o ppid | grep " $1$" | grep -v -e ' grep ' -e ' ps -e '
 }
 
+# get the pid field from the output line of ps_children
+get_pid() {
+  echo "$1" | grep -E -o '[0-9]+' | head -n 1
+}
+
 # nb_report_lines( ) : get number of lines in report
 nb_report_lines () {
   report_lines="$(wc -l selftest_report.log)"
@@ -127,12 +132,12 @@ for app in $OTB_APPS; do
     nb_try=0
     while [ -z "$NEXT_CHILD_PID" -a $nb_try -lt 10 ]; do
       sleep 1s
-      CHILD_PROC=$(ps_children $GUI_PID | grep "bin/otbgui $app")
+      CHILD_PROC=$(ps_children $GUI_PID | grep " bin/otbgui $app")
       if [ -n "$CHILD_PROC" ]; then
-        CHILD_PID=$(echo "$CHILD_PROC" | cut -d ' ' -f 1)
+        CHILD_PID=$(get_pid "$CHILD_PROC")
         NEXT_CHILD_PROC=$(ps_children "$CHILD_PID" | grep 'otbApplicationLauncherQt')
         if [ -n "$NEXT_CHILD_PROC" ]; then
-          NEXT_CHILD_PID=$(echo "$NEXT_CHILD_PROC" | cut -d ' ' -f 1)
+          NEXT_CHILD_PID=$(get_pid "$NEXT_CHILD_PROC")
         fi
       fi
       nb_try=$(( nb_try + 1 ))