On Thu 2019-12-12 (17:06), L A Walsh wrote: > On 2019/12/12 13:40, Eliot Moss wrote: > > > Ah! I think what you want is a tmpfs or ramfs. > > Not sure if cygwin supports that ... > > > ---- > Easiest thing might be to use /dev/shm. I used it during > development to store intermediate data that was later to be > transfered via a fifo... > > Basically check for existence of "/dev/shm" (exists on my cygwin). > if "tmp" didn't already exist, create it w/options similar to > /tmp (only owner can delete/edit): > > mkdir -m 1777 /tmp/shm/tmp > > > **Warning, "writes" to /dev/shm/tmp (or /dev/mem) can fill up > your system's memory, so its only good for "small files" > (small being well under your system's free memory amount).
This is true for Linux, but not for cygwin, where /dev/shm is ntfs on disk: ~: uname -a CYGWIN_NT-10.0 VD-TIK-12 3.0.7(0.338/5/3) 2019-04-30 18:08 x86_64 Cygwin ~: df -TH /dev/shm Filesystem Type Size Used Avail Use% Mounted on C:/cygwin64 ntfs 34G 25G 8.9G 74% / Its content is still there after a reboot and I can see it with the windows explorer: https://fex.belwue.de/fop/dyQzlG1x/X-20191213103905.png -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlac...@tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<5df2e42a.7020...@tlinx.org> -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple