Hi Masami, On Fri, 2018-11-30 at 00:07 +0900, Masami Hiramatsu wrote: > Use /bin/echo for console output with options like non > newline (-n) and/or backslash escape (-e). > > Tom Zanussi reported that when he tested ftracetest, it > shows "-e" and "-n" options on the console, since a system > which uses dash as the alias of /bin/sh, uses dash built-in > echo command which doesn't accept "-e". > > To avoid this issue, use /bin/echo instead of echo for > the output with options. > > Fixes: 8f381ac4d321 ("selftests/ftrace: Add color to the PASS / FAIL > results") > Link: http://lkml.kernel.org/r/cover.1542221862.git.tom.zanussi@linux > .intel.com > Reported-by: Tom Zanussi <zanussi@xxxxxxxxxx> > Suggested-by: Tom Zanussi <zanussi@xxxxxxxxxx> > Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx> > --- > 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..ba670b452bdb 100755 > --- a/tools/testing/selftests/ftrace/ftracetest > +++ b/tools/testing/selftests/ftrace/ftracetest > @@ -173,8 +173,8 @@ strip_esc() { > } > > prlog() { # messages > - echo -e "$@" > - [ "$LOG_FILE" ] && echo -e "$@" | strip_esc >> $LOG_FILE > + /bin/echo -e "$@" > + [ "$LOG_FILE" ] && /bin/echo -e "$@" | strip_esc >> $LOG_FILE > } > catlog() { #file > cat $1 > I tried this on the three systems mentioned before, and it worked fine on all of them. Tested-by: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx>