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An environment variable is a user-definable value that can affect the way running processes will behave on a computer. Environment variables are part of the environment in which a process runs.
COMSPEC or ComSpec is one of the environment variables used in DOS, OS/2 and Windows, which normally points to the command line interpreter, which is by default COMMAND.COM in DOS, [1] Windows 95, 98, and ME or CMD.EXE in OS/2 and Windows NT.
PowerShell is a task automation and configuration management program from Microsoft, consisting of a command-line shell and the associated scripting language.Initially a Windows component only, known as Windows PowerShell, it was made open-source and cross-platform on August 18, 2016, with the introduction of PowerShell Core. [9]
On Microsoft Windows, Remote Desktop Protocol can be used to provide GUI remote access, since Windows Vista, PowerShell Remote, since Windows 10 build 1809 SSH [4] can also be used for text-based remote access via WMI, RPC, and WS-Management. [5] Most operating system shells fall into one of two categories – command-line and graphical.
The directory stack underlies the functions of these two commands. It is an array of paths stored as an environment variable in the CLI, which can be viewed using the command dirs in Unix or Get-Location -stack in PowerShell. The current working directory is always at the top of the stack.
The PowerShell and fish shells natively support this feature; pressing the Tab ↹ key inserts the completion. Implementations of this feature can differ between shells; for example, PowerShell [44] and zsh [45] use an external module to provide completions, and fish derives its completions from the user's command history. [46]
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
env is a shell command for Unix and Unix-like operating systems.It is used to either print a list of environment variables or run another utility in an altered environment without having to modify the currently existing environment.