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devpts is a virtual filesystem directory available in the Linux kernel since version 2.1.93 (April 1998). It is normally mounted at /dev/pts and contains solely devices files which represent slaves to the multiplexing master located at /dev/ptmx which in turn is used to implement terminal emulators (such as X11 xterm ).
Devpts is a Linux kernel virtual file system containing pseudoterminal devices. Linux implementation is based on System V -style terminals (commonly referred as UNIX 98 pseudoterminals) [4] and provides POSIX and the Single Unix Specification API in the form of a posix_openpt () function since 1998. [5] History.
The device mapper is a framework provided by the Linux kernel for mapping physical block devices onto higher-level virtual block devices. It forms the foundation of the logical volume manager (LVM), software RAIDs and dm-crypt disk encryption, and offers additional features such as file system snapshots. [1]
fstab (after file systems table) is a system file commonly found in the directory /etc on Unix and Unix-like computer systems. In Linux, it is part of the util-linux package.
Command. chroot is an operation on Unix and Unix-like operating systems that changes the apparent root directory for the current running process and its children. A program that is run in such a modified environment cannot name (and therefore normally cannot access) files outside the designated directory tree.
The mtab (contraction of mounted file systems table) file is a system information file, commonly found on Unix-like systems. Overview.
In computer science, read-copy-update ( RCU) is a synchronization mechanism that avoids the use of lock primitives while multiple threads concurrently read and update elements that are linked through pointers and that belong to shared data structures (e.g., linked lists, trees, hash tables ). [1]