[root@localhost /]# lsmod | grep hda
snd_hda_intel         368804  4
snd_pcm                85384  2 snd_hda_intel
snd_page_alloc         12816  2 snd_hda_intel,snd_pcm
snd_hwdep              12424  1 snd_hda_intel
snd                    60392  9 snd_mixer_oss,snd_hda_intel,snd_pcm,snd_timer,snd_hwdep
[root@localhost /]# snd
bash: snd: command not found
[root@localhost /]# lsmod | grep snd
snd_mixer_oss          20352  1
snd_hda_intel         368804  4
snd_pcm                85384  2 snd_hda_intel
snd_timer              25864  2 snd_pcm
snd_page_alloc         12816  2 snd_hda_intel,snd_pcm
snd_hwdep              12424  1 snd_hda_intel
snd                    60392  9 snd_mixer_oss,snd_hda_intel,snd_pcm,snd_timer,snd_hwdep
soundcore              11168  2 snd
[root@localhost /]#