log for linux bash command

Unless a command has output or logging already configured, rc.local commands will not log anywhere.

If you want to see logs for specific commands, try redirecting the stdout and stderr for rc.localto somewhere you can check. Try adding this to the top of your /etc/rc.local file.

exec 2> /tmp/rc.local.log      # send stderr from rc.local to a log file
exec 1>&2                      # send stdout to the same log file
set -x                         # tell sh to display commands before execution

Though this will require to rerun the rc.local file.