change ``bash headers to ``sh

sound/basics.md

@@ -9,13 +9,13 @@ Check with `which pulseaudio`. No output means you need to use alsa (below).
 
 # Volume Control
 
-```bash
+```sh
 pactl set sink @DEFAULT_SINK@ +5%
 ```
 
 Find working outputs:
 
-```bash
+```sh
 aplay -l
 ```
 
@@ -30,7 +30,7 @@ amixer scontrols
 
 # Change a Sound setting
 
-```bash
+```sh
 amixer set Master 5%-
 ```
 
@@ -42,19 +42,19 @@ pulseaudio -k && sudo alsa force-reload
 
 Toggle, mute, increase or decrase audio:
 
-```bash
+```sh
 amixer sset Master toggle
 ```
 
-```bash
+```sh
 amixer sset Master mute
 ```
 
-```bash
+```sh
 amixer sset Master 5%+
 ```
 
-```bash
+```sh
 amixer sset Master 5%-
 ```
 
@@ -62,14 +62,14 @@ amixer sset Master 5%-
 
 Start with:
 
-```bash
+```sh
 alsamixer
 ```
 
 Then press `F6` to see available Sound cards.
 If you find a Sound card called 'PinePhone', then you can select an audio source there, and adjust with:
 
-```bash
+```sh
 amixer -c PinePhone set 'Headphone' 50%
 ```
 

sound/mpd.md

@@ -40,13 +40,13 @@ You can use alsa instead of pulse, but don't unless you're on a Pi.
 
 Since this is run as the mpd user, you'll need to grant that user pulse acceess, often with the user-group `pulse` or `pulse-access`, but your distro may vary.
 
-```bash
+```sh
 sudo usermod -aG pulse-access mpd
 ```
 
 Working with mpd will be easier if you have access to its files, so maybe:
 
-```bash
+```sh
 sudo usermod -aG mpd $USER
 ```
 
@@ -56,7 +56,7 @@ sudo usermod -aG mpd $USER
 
 Install `mpd-notification` and then start the service:
 
-```bash
+```sh
 systemctl --user enable mpd-notification
 ```
 

sound/ncmpcpp.md

@@ -17,7 +17,7 @@ I couldn't change volume, so in mpd.conf I uncommented the pulse audio lines and
 
 Also, make sure the user mpd is part of the group pulse:
 
-```bash
+```sh
 sudo adduser mpd pulse
 ```