Under Linux, nowadays, /dev/stdin and friends are not implemented as character devices, but instead as symbolic links to a more general mechanism that allows every file descriptor to be …

Mar 8, 2015 · In addition to these read-only information files, Linux's /proc also has writable virtual files that can change the state of the running kernel. BSD type OSes generally do not have …

May 23, 2013 · ls -l /dev will give you the major and minor numbers, e.g. crw-rw---- 1 root dialout 4, 64 Apr 4 07:54 /dev/ttyS0 has major number 4 and minor number 64. Then you can look at …

Nov 6, 2015 · # ls -l /dev/zero crw-rw-rw- 1 root root 1, 5 Nov 5 09:34 /dev/zero The "c" at the start tells you that this is a "character device"; the other type is "block device" (printed by ls as "b"). …

TL;DR: It has to do with the way Linux (and other Unixes as well) name their drives, much in the way that Windows uses C:, D:, etc. (NOTE: This is what we call a metaphor. In other words, a …

Nov 1, 2011 · Using lsblk with some custom output columns I was able to find a more precise solution. See: $ lsblk -o …

Jul 16, 2014 · sudo dd if=/dev/urandom of=/dev/mem /dev/mem provides access to physical memory, i.e. all of the RAM in the system, however this doesn't mean that it gives you full …

Nov 14, 2014 · by-id symlinks are created by udev rules (and are specific to OS'es using udev). You can find the specific rules in /lib/udev/rules.d:

Nov 30, 2018 · Does /dev/console play the same role for Linux kernel as /dev/tty for a process? (/dev/tty is the controlling terminal of the process session of the process, and can be a pts, …

Recent 2.6 Linux kernel builds have started to offer /dev/shm as shared memory in the form of a ramdisk, more specifically as a world-writable directory that is stored in memory with a defined …