tree 3b79e3da77523f8951b3a10005e97431fba1666a
parent 9d407bf7fc7724c91bfe5fe0ef6624e7f8e11c52
author Patrick Williams <patrick@stwcx.xyz> 1618412946 -0500
committer Patrick Williams <patrick@stwcx.xyz> 1618412958 -0500

led-set-all-groups-asserted: fix shellcheck issues

Fix various issues reported by shellcheck:
    - Negative numbers are not valid shell return codes.
    - Numorous variables needing quotes to prevent wordsplits.
    - Prefer (( expr )) over let syntax.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I8f23138e969a49ee4951aedee5fda22cb19ce217