1 files changed, 13 insertions, 8 deletions
diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
index 75244db70331..136387422b00 100755
--- a/tools/testing/selftests/ftrace/ftracetest
+++ b/tools/testing/selftests/ftrace/ftracetest
@@ -154,17 +154,17 @@ fi
 
 # Define text colors
 # Check available colors on the terminal, if any
-ncolors=`tput colors 2>/dev/null`
+ncolors=`tput colors 2>/dev/null || echo 0`
 color_reset=
 color_red=
 color_green=
 color_blue=
 # If stdout exists and number of colors is eight or more, use them
-if [ -t 1 -a "$ncolors" -a "$ncolors" -ge 8 ]; then
-  color_reset="\e[0m"
-  color_red="\e[31m"
-  color_green="\e[32m"
-  color_blue="\e[34m"
+if [ -t 1 -a "$ncolors" -ge 8 ]; then
+  color_reset="\033[0m"
+  color_red="\033[31m"
+  color_green="\033[32m"
+  color_blue="\033[34m"
 fi
 
 strip_esc() {
@@ -173,8 +173,13 @@ strip_esc() {
 }
 
 prlog() { # messages
-  echo -e "$@"
-  [ "$LOG_FILE" ] && echo -e "$@" | strip_esc >> $LOG_FILE
+  newline="\n"
+  if [ "$1" = "-n" ] ; then
+    newline=
+    shift
+  fi
+  printf "$*$newline"
+  [ "$LOG_FILE" ] && printf "$*$newline" | strip_esc >> $LOG_FILE
 }
 catlog() { #file
   cat $1