demo1@localhost ~]$ ls /dev/dsp*
/dev/dsp  /dev/dsp1  /dev/dsp2
[demo1@localhost ~]$ ls /dev/snd/*
/dev/snd/controlC0  /dev/snd/pcmC0D0c  /dev/snd/pcmC1D0c  /dev/snd/pcmC2D0p
/dev/snd/controlC1  /dev/snd/pcmC0D0p  /dev/snd/pcmC1D0p  /dev/snd/seq
/dev/snd/controlC2  /dev/snd/pcmC0D1c  /dev/snd/pcmC2D0c  /dev/snd/timer
[demo1@localhost ~]$ fuser /dev/snd/*
bash: fuser: command not found