Re: Bug#903815: ITP: pw -- A simple command-line password manager
]] Michael Stone
> On Mon, Jul 16, 2018 at 03:14:20PM +0200, Dashamir Hoxha wrote:
> >It writes to `/dev/shm` which is not disk.
>
> All else that's been said aside, this idea is also dangerously
> incorrect in a typical configuration: the tmpfs backend will write to
> swap under memory pressure. (This is also true of the memory used by
> the process; if it's actually important to keep data from being
> written to persistent storage, it should be set unswappable using
> mlock. I have no idea how one would do this effectively in a shell
> script.)
Assuming it's small enough, using a pipe (or possibly a FIFO) could
work. That's kernel memory and iirc it won't be swapped out. (I'm
happy to be corrected on this, I'm basing it on what I've heard before
and my recollection of it.)
--
Tollef Fog Heen
UNIX is user friendly, it's just picky about who its friends are
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