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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.
The chgrp command was originally developed as part of the Unix operating system by AT&T Bell Laboratories. It is also available in the Plan 9 and Inferno operating systems and in most Unix-like systems. The chgrp command has also been ported to the IBM i operating system. [1] The version of chgrp bundled in GNU coreutils was written by David ...
This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.
As a terminal emulator, the application provides text-based access to the operating system, in contrast to the mostly graphical nature of the user experience of macOS, by providing a command-line interface to the operating system when used in conjunction with a Unix shell, such as zsh (the default interactive shell since macOS Catalina [3]). [4]
Mac OS X Leopard added the ability to create, resize, and delete disk partitions without erasing them, a feature known as live partitioning. In OS X El Capitan , Disk Utility has a different user interface and lost the abilities to repair permissions due to obsolescence , [ 6 ] create and manage disks formatted as RAID , burn discs, and multi ...
A full file reference (pathname in today's parlance) consists of a filename, a filetype, and a disk letter called a filemode (e.g. A or B). Minidisks can correspond to physical disk drives, but more typically refer to logical drives, which are mapped automatically onto shared devices by the operating system as sets of virtual cylinders.
-c, display a grand total of the disk usage found by the other arguments-d #, the depth at which summing should occur. -d 0 sums at the current level, -d 1 sums at the subdirectory, -d 2 at sub-subdirectories, etc.-H, calculate disk usage for link references specified on the command line-k, show sizes as multiples of 1024 bytes, not 512-byte
And an even more powerful command, creating a full tree at once (this however is a Shell extension, nothing mkdir does itself): mkdir -p tmpdir/ { trunk/sources/ { includes,docs } ,branches,tags } If one is using variables with mkdir in a bash script, POSIX `special' built-in command 'eval' would serve its purpose.