Peter Dave Hello ce634f7deb Correct exit using, the exit status should be 0~255
According to the POSIX Programmer's Manual, the exit status specified by
the unsigned decimal integer. If n is specified, but its value is not
between 0 and 255 inclusively, the exit status is undefined.

By cross reference the usage between different scripts in this project,
it looks like we could simply remove the `-` before the number.
2021-06-15 16:04:23 +08:00
..
2017-09-18 14:02:12 +02:00