Search results
Results From The WOW.Com Content Network
In computing, TIME is a command in DEC RT-11, [1] DOS, IBM OS/2, [2] Microsoft Windows [3] and a number of other operating systems that is used to display and set the current system time. [4] It is included in command-line interpreters ( shells ) such as COMMAND.COM , cmd.exe , 4DOS , 4OS2 and 4NT .
COMMAND.COM, the original Microsoft command line processor introduced on MS-DOS as well as Windows 9x, in 32-bit versions of NT-based Windows via NTVDM; cmd.exe, successor of COMMAND.COM introduced on OS/2 and Windows NT systems, although COMMAND.COM is still available in virtual DOS machines on IA-32 versions of those operating systems also.
While Bash was developed for UNIX and UNIX-like operating systems, such as GNU/Linux, it is also available on Android, macOS, Windows, and numerous other current and historical operating systems. [12] "Although there have been attempts to create specialized shells, the Bourne shell derivatives continue to be the primary shells in use."
An MS-DOS command line, illustrating parsing into command and arguments. A command-line argument or parameter is an item of information provided to a program when it is started. [23] A program can have many command-line arguments that identify sources or destinations of information, or that alter the operation of the program.
The end of the HELP command output from RT-11SJ displayed on a VT100. The BusyBox HELP command. In computing, help is a command in various command line shells such as COMMAND.COM, cmd.exe, Bash, qshell, 4DOS/4NT, Windows PowerShell, Singularity shell, Python, MATLAB [1] and GNU Octave. [2]
Command-line completion generally only works in interactive mode. That is, it cannot be invoked to complete partially typed commands in scripts or batch files, even if the completion is unambiguous. The name tab completion comes from the fact that command-line completion is often invoked by pressing the tab key.
In a popular Unix shell Bash, time is a special keyword, that can be put before a pipeline (or single command), that measures time of entire pipeline, not just a singular (first) command, and uses a different default format, and puts empty line before reporting times:
Microsoft Windows [10] ReactOS [11] HP MPE/iX [12] KolibriOS [13] SymbOS; Unix and Unix-like operating systems; Many shells, including all Bourne-like (such as Bash [14] or zsh [15]) and Csh-like shells as well as COMMAND.COM and cmd.exe implement echo as a builtin command. The command is also available in the EFI shell. [16]