GNU nano

GNU nano is a text editor for computing systems that uses a command line interface. It is typically used on Linux systems but also on other Unix-like systems. GNU nano …

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NULL

A NULL value is a unique value that represents unknown or missing data. In most programming languages, NULL is represented as a zero-length string, but in some cases, it may …

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command

In computing, a command is a directive to a computer program to perform a specific task. It is typically entered as text at a command prompt by a user and …

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root

In computing, a root is the highest level of a directory tree, and all other directories are children of the root directory. The term comes from the fact that the …

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FreeBSD

FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution (BSD). It is based on U.C. Berkeley’s “4.4BSD-Lite” release, with some additional code from FreeBSD’s …

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swap space

In computing, swap space provides a layer of abstraction between the operating system and the physical memory. When a process needs more memory than is available in physical RAM, the …

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