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POSIX general defines three special files: /dev/tty /dev/console /dev/null In addition, / and /tmp are also defined by POSIX. /dev/zero, /dev/urandom or /dev/random are defined in some UNIX-like operating systems. Some operating systems may not define them, or implement with different names. Note POSIX direcory structure and files /dev/zero ...


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What is a Terminal? A terminal consists of a screen and keyboard that one uses to communicate remotely with a computer (the host). One uses it almost like it was a personal computer but the terminal is remote from its host computer that it communicates with (on the other side of the room or even on the other side of the world). Question 1 /dev/tty ...


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You can do this using udev. Create a file in /etc/udev/rules.d with the suffix .rules, e.g. local.rules, and add a line like this to it: ACTION=="add", KERNEL=="i2c-[0-1]*", MODE="0666" MODE=0666 is rw for owner, group, world. Something you can do instead of, or together with that, is to specify a GID for the node, e.g: GROUP="pi" If you use this ...


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The free-electrons header is internal to the kernel source, and you will find it if you look in [src]/include/linux; if you are compiling kernel code, that should be in play. The header you've pasted is the system header, from /usr/include/linux. That's for user land code that needs access to the constants and macros defined therein. These don't ...



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