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

[Petr Vorel]

Hi Cyril, Li,

> > 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.

FYI merged with replaced 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.

FYI I'll probably add options string for shell and might add support for C API
to have help (would be useful for netstress.c).

Kind regards,
Petr

> Kind regards,
> Petr