In Ubuntu,/tmp uses tmpfs to increase the processing speed and security of temporary files.

In Ubuntu,/tmp uses tmpfs to increase the processing speed of temporary files and increase security. 1. Problem background: www.2cto. comUbuntu version: 12.1064bit didn't actually consider using tmpfs from the perspective of improving the speed, but I needed to make/tmp safer. Once I mentioned U...
In Ubuntu,/tmp uses tmpfs to increase the processing speed of temporary files and increase the security. 1. Problem background: www.2cto.com Ubuntu version: 12.10 64bit didn't actually consider using tmpfs from the perspective of improving the speed, instead, I need to make/tmp safer. One blog post mentioned secure deletion of Ubuntu files (http://www.2cto.com/ OS /201209/153606.html), but could not
Solve the/tmp problem. Because when operating some documents with higher security levels, there will always be traces in/tmp (after temporary files are deleted ). Every time we use sfill in secure-delete to fill the file, it is still a little troublesome. The sfill method is to fill the disk or directory with random data as much as possible and then delete it automatically. this takes a long time. 2. the analysis solves the problem of accidental discovery on the Internet and the use of tmpfs to mount/tmp. In this way, the temporary data is stored in the memory, and the restart data is gone, so it meets my requirements. The method is simple. edit/etc/fstab to add a line and restart. Www.2cto.com 1 tmpfs/tmp tmpfs ULTS ults, noatime, mode = 1777, nosuid, size = 1024 M 0 0 here I divided the 1G memory, but don't worry that this is the maximum value. The memory consumption value depends on actual use. Run df-h to view the actual mounting and usage. 1df-h2Filesystem Size Used Avail Use % Mounted on3/dev/sda1 40G 9.9G 28G 27%/4 udev 2.9G 4.0 K 2.9G 1%/dev5tmpfs 1.0G 72 K 1.0G 1%/tmp6... currently, 72 kB is used, because/tmp may be used to process large temporary files, so it is best not to set too small.