Simple backup of maildir folder

[Joseph Tam]

On Sun, 31 May 2020, Laura Smith wrote:

>> A couple of notes on this quite useful script:
>>
>> My mktemp does not support -p (FreeBSD 12.1) is I had to change the script to:
>
> In my scripts I tend to create a tempdir and then tempfiles within that.  It makes the cleanup routine neater, e.g. at the top of my scripts :
>
> TEMP_DIR=$(mktemp -qd || { doLog "Failed to make temp dir !"; exit 1; })
> rmTmpFiles() { rm -rf "${TEMP_DIR}"; }
> createTempFile() { local MYTEMP=$(mktemp -qp "${TEMP_DIR}" || doLog "Failed to create temp file"; exit 1); echo $MYTEMP; }
>
> Also my backup scripts have locking procedures built-in so as to avoid race conditions.

You might also want a trap handler that does a cleanup in case something
goes sideways in the middle of processing e.g.

 	trap rmTmpFiles 0

Joseph Tam <jtam.home at gmail.com>