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The r-commands were developed in 1982 by the Computer Systems Research Group at the University of California, Berkeley, based on an early implementation of TCP/IP (the protocol stack of the Internet). [2] The CSRG incorporated the r-commands into their Unix operating system, the Berkeley Software Distribution (BSD). The r-commands premiered in ...
An undefined variable in the source code of a computer program is a variable that is accessed in the code but has not been declared by that code. [ 1 ] In some programming languages , an implicit declaration is provided the first time such a variable is encountered at compile time .
This is a list of commands from the GNU Core Utilities for Unix environments. These commands can be found on Unix operating systems and most Unix-like operating systems. GNU Core Utilities include basic file, shell and text manipulation utilities. Coreutils includes all of the basic command-line tools that are expected in a POSIX system.
Info-ZIP is a set of open-source software to handle ZIP archives.It has been in circulation since 1989. It consists of 4 separately-installable packages: the Zip and UnZip command-line utilities; and WiZ and MacZip, which are graphical user interfaces for archiving programs in Microsoft Windows and classic Mac OS, respectively.
7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. [2] 7-Zip has its own archive format called 7z introduced in 2001, [12] but can read and write several others.
Crack v5.0a [6] released in 2000 did not introduce any new features, but instead concentrated on improving the code and introducing more flexibility, such as the ability to integrate other crypt() variants such as those needed to attack the MD5 password hashes used on more modern Unix, Linux and Windows NT [7] systems. It also bundled Crack v6 ...
Total Commander is an orthodox file manager, i.e. it features two file list panels (selectable via tab key) and a command line. It supports multiple tabs for each panel. Total Commander is developed by Christian Ghisler and distributed as shareware or freeware , depending on the platform.
Execute commands at a later time Version 7 AT&T UNIX awk: Text processing Mandatory Pattern scanning and processing language Version 7 AT&T UNIX basename: Filesystem Mandatory Return non-directory portion of a pathname; see also dirname Version 7 AT&T UNIX batch: Process management Mandatory Schedule commands to be executed in a batch queue bc ...