On Mon, 14 Sep 2015 22:31:21 +0200, Ralf Mardorf wrote: >card=1; killall -9 jackd && jackd -dalsa -dhw:$card -r48000 -p1024 -n2 ^^ That's a bad idea, either would be ||. Run it that way: card=1; killall -9 jackd; jackd -dalsa -dhw:$card -r48000 -p1024 -n2 ^