Software :: Change Volume Up Using Nmixer Tool?

i need to ask about some way on how i can change my volume up using my nmixer tool, really i find that i can make some commands like :

Code:
nmixer -q -s pcm=70
nmixer -q -s pcm=100

so, here i put pcm and pcm2 volume to 70% and 100% respectively. but when i make some cronjob to this commands but some of bash scripts it doesn't deployed yet, here is my script :

Code:
#!/bin/bash
nmixer -q -s pcm=100
nmixer -q -s pcm2=70
#END

[Code].....