Re: dvd+rw-tools update [6.1, O_EXCL]

[Matthias Andree <matthias.andree@gmx.de>]

Greg Wooledge schrieb am 2006-02-14:

> On Mon, Feb 13, 2006 at 10:27:52PM +0100, Matthias Andree wrote:
> > [ -f rpl8 ] && whatever
> > 
> > fails if rpl8 is missing, and does not only skip "whatever" (here:
> > install), but also exits the whole compound command with code 1, which
> > aborts the make target.
> > 
> > "[ CONDITION ] && whatever" is therefore a Makefile pitfall.
> 
> Try this:
> 
> [ -f rpl8 ] && whatever || true

Or, less obscure:

if [ -f rpl8 ] ; then whatever ; fi

The "|| true" can be shortened to "|| :" with most shells.

-- 
Matthias Andree