Thanks. However, before I proceed with your suggestion, here are the results of the commands (which actually vary from what you mentioned).
$ mount | egrep "pts|shm" none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /dev/shm type tmpfs (ro) $ cat /etc/mtab |egrep "pts|shm" none /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0 tmpfs /dev/shm tmpfs ro 0 0 The /dev/shm is different from what you expect and is also showing "ro" but if I use remount as you wrote, it becomes "rw" for that session. The /etc/fstab has the entries (only relevant part shown): ************************************************************************************** <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda1 during installation UUID=2a270867-509b-4267-85b6-75e8233fc511 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=57c1acc5-2d96-4ed5-867a-962e7b7bc588 none swap sw 0 0 tmpfs /dev/shm tmpfs defaults,ro 0 0 ***************************************************************************************** I guess you suggest me to delete the last line above and copy the part "/dev/shm type tmpfs (rw,nosuid,nodev)" there. But what about the word "none"? What should be there at <filesystem>? "none" or a blank-space? Similarly, in the /etc/mtab there is an entry "tmpfs /dev/shm tmpfs rw 0 0". Here also should I replace "tmpfs" with "none" or with a space? Third, will it work if I write the following in the /etc/fstab (with tmpfs replaced by what you suggest) tmpfs /dev/shm tmpfs defaults,noexec,nosuid 0 0 This also mounts /dev/shm writable but probably better from security point of view. Frankly, I do not fully understand mounting issues and I am trying to understand, so I am asking such questions here. I hope you will bear with me. Thanks, AD -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
