[LTP] [PATCH 1/2] tst_test.sh: Print environment variables in help

[Petr Vorel]

> Hi!
> > diff --git a/testcases/lib/tst_test.sh b/testcases/lib/tst_test.sh
> > index 30614974c3..a7fd7b19c6 100644
> > --- a/testcases/lib/tst_test.sh
> > +++ b/testcases/lib/tst_test.sh
> > @@ -448,12 +448,30 @@ tst_usage()
> >  	if [ -n "$TST_USAGE" ]; then
> >  		$TST_USAGE
> >  	else
> > -		echo "usage: $0"
> > -		echo "OPTIONS"
> > +		cat << EOF
> > +usage: $0
> > +
> > +Options
> > +-------
> > +EOF

> I think that the cat EOF syntax inside of else branch is a bit
> confusing, especially sice it prints just three lines of text...

Good point, I'll replace it with echo.


> But other than that:

> Reviewed-by: Cyril Hrubis <chrubis@suse.cz>

How about dropping this?
echo "usage: $0"

(as a separate commit, I'd sent v2)

Because we don't support it in C API, is it really required to have it in shell.

I mean it's useful to show which options are mandatory or which cannot be
combined together etc. But in reality most of shell tests does not add it and
thus they are missing "OPTIONS" line (sure, I can add usage to them if you
think it's useful).

OTOH some tests have really complex setup, i.e.
testcases/network/netstress/netstress.c, that adding a support for usage string
would help them.

If you notice there were extra new lines (\n) to separate client and server side
to make help at least a bit readable, but Andrea removed them in 98af9ecf9e
("tst_test: Complete help message adding option before desc"):

git show --word-diff 98af9ecf9e334c07251f2f464191635f161a1603 testcases/network/netstress/netstress.c

These extra lines would not be needed when sort of usage added to C API.
I can add it, but I'm aware it's so minor, that I'm wasting a time of all of us.

Kind regards,
Petr