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Date: Mon, 25 Feb 2019 14:14:50 +0100 From: Juerg Haefliger <juerg.haefliger@...onical.com> To: rostedt@...dmis.org, mingo@...hat.com, shuah@...nel.org, linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Juerg Haefliger <juergh@...onical.com> Subject: [RESEND PATCH] selftests/ftrace: Handle the absence of tput In environments where tput is not available, we get the following error $ ./ftracetest: 163: [: Illegal number: because ncolors is an empty string. Fix that by setting it to 0 if the tput command fails. Acked-by: Steven Rostedt (VMware) <rostedt@...dmis.org> Acked-by: Masami Hiramatsu <mhiramat@...nel.org> Signed-off-by: Juerg Haefliger <juergh@...onical.com> --- tools/testing/selftests/ftrace/ftracetest | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest index 75244db70331..fc755e1b50f1 100755 --- a/tools/testing/selftests/ftrace/ftracetest +++ b/tools/testing/selftests/ftrace/ftracetest @@ -154,13 +154,13 @@ 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 +if [ -t 1 -a "$ncolors" -ge 8 ]; then color_reset="\e[0m" color_red="\e[31m" color_green="\e[32m" -- 2.19.1
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