Use /bin/sh as the shell for example scripts instead of bash

[dfandrich]

There aren't any bashisms in the scripts so there's no reason to be so specific.

[przemoc]

Actually there are bashisms, but they can be obviously removed. I noticed following ones:

• echo -n
• read -n1

[przemoc]

Bashisms fixed in 78d393659d13 and your patch applied in 5cdbdd2ccd5. Thanks.