#/bin/bash rm -rf lofi mkdir lofi for i in m*; do echo $i; sox $i -c 1 -r 22050 lofi/$i; done for i in s*; do echo $i; sox $i -c 1 -r 22050 lofi/$i; done for i in v*; do echo $i; sox $i -r 22050 lofi/$i; done