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The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...
A serial port is a serial communication interface through which information transfers in or out sequentially one ... On Linux, 8250/16550 UART ... number of data bits ...
The Linux console provides a way for the kernel and other processes to output text-based messages to the user, and to receive text-based input from the user. In Linux, several devices can be used as system console: a virtual terminal, [8] serial port, [9] USB serial port, [10] VGA in text-mode, [11] framebuffer. [12]
In Linux, each serial port is referenced by two device names - one being (for the first serial port) /dev/ttyS0 versus /dev/cua0. Although these both refer to the same physical port, one important distinction between the way Linux treats these two device names has to do with the DCD line.
ttyS: (platform) serial port driver; ttyUSB: USB serial converters, modems, etc. The canonical list of the prefixes used in Linux can be found in the Linux Device List, the official registry of allocated device numbers and /dev directory nodes for the Linux operating system. [11] For most devices, this prefix is followed by a number uniquely ...
The information often includes usage status for the CPU sockets, expansion slots (including AGP, PCI and ISA) and memory module slots, and the list of I/O ports (including serial, parallel and USB). [4] [5] Decoded DMI tables for various computer models are collected in a public GitHub repository. [6] For Dell systems there is a libsmbios ...
The Serial Line Internet Protocol (SLIP) [1] [2] is an encapsulation of the Internet Protocol [a] designed to work over serial ports and router connections. It is documented in RFC 1055 . On personal computers, SLIP has largely been replaced by the Point-to-Point Protocol (PPP), which is better engineered, has more features, and does not ...
The other pseudo-device, the slave, emulates a hardware serial port device, [1] and is used by terminal-oriented programs such as shells (e.g. bash) as a processes to read/write data back from/to master endpoint. [1] PTYs are similar to bidirectional pipes. [3]: 1388 Devpts is a Linux kernel virtual file system containing pseudoterminal devices.