Change Volume via single command?

Question

I need to change my volume on my USB sound card (which is the default card) via the command line. I know alsamixer will do that but I need it to be a one line command so I can use it in a python script, e.g., os.system("volume up 1"), or something like that. Is there any way to do this?

Answer 1

1. Create a Bash file with the following code:

   amixer scontrols
   amixer sset 'Master' 50%
   

2. Make the Bash file executable using chmod +x filename

3. In Python, use the following:

   import os
   os.system("directorytobashfile/file")