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4DOS, 4OS2, 4NT / Take Command Console and PowerShell (in PowerShell ISE) looks up context-sensitive help information when F1 is pressed. Zsh provides various forms of configurable context-sensitive help as part of its run-help widget, _complete_help command, or in the completion of options for some commands.
In Windows PowerShell, type is a predefined command alias for the Get-Content Cmdlet which basically serves the same purpose. TYPE originated as an internal command in 86-DOS. The command-syntax and feature set between operating systems and command shell implementations can differ as can be seen in the following examples.
By default, STDIN, STDOUT and STDERR will be connected to the CON: device, but by giving the device name as a parameter on startup (COMMAND.COM COM1:) or using the CTTY COM1: command, you could attach the shell to, for example, a serial port. In the DOS world, this is typically known as "console redirection".
The following example shows how command-line completion works in Bash. Other command line shells may perform slightly differently. First we type the first three letters of our command: fir Then we press Tab ↹ and because the only command in our system that starts with "fir" is "firefox", it will be completed to: firefox
Windows users might use the CScript interface to alternate programs, from the command line. PowerShell provides a command-line interface, but its applets are not written in Shell script. Implementations of the Unix shell are also available as part of the POSIX sub-system, [39] Cygwin, MKS Toolkit, UWIN, Hamilton C shell and other software packages.
In computing, command substitution is a facility that allows a command to be run and its output to be pasted back on the command line as arguments to another command. Command substitution first appeared in the Bourne shell , [ 1 ] introduced with Version 7 Unix in 1979, and has remained a characteristic of all later Unix shells .
An example spangram with corresponding theme words: PEAR, FRUIT, BANANA, APPLE, etc. Need a hint? Find non-theme words to get hints. For every 3 non-theme words you find, you earn a hint.
PowerShell: Administration, application, general, scripting Yes Yes Yes Yes No Yes Pipeline: No Prolog: Application, artificial intelligence No No Yes Yes No Yes Logic, declarative Yes 1995, ISO/IEC 13211-1:1995, TC1 2007, TC2 2012, TC3 2017 PureBasic: Application Yes No No Yes No No No Python