command line


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command line

[kə′mand ‚līn]
(computer science)
On a display screen, the space following a prompt (such as $) where a text instruction to a computer or device is typed.

command line

Software that provides a blank line and cursor on screen, allowing the user to type in instructions for immediate execution. All major operating systems (Windows, Mac, Unix, Linux, etc.) support command lines that programmers and power users can employ to perform file management operations directly and often more efficiently than by using a graphical user interface (GUI). After typing a command, it is executed by pressing the Enter key.

Windows Examples
There are numerous Windows commands in this encyclopedia, and two examples follow. To do these operations in Windows Explorer or a Windows-based Pkzip utility would take numerous mouse clicks. See Windows commands.

Command             Operation Performedcopy *.html d:\abc  Copy HTML files to
                     ABC folder in D drive

 pkzip xyz *.jpg     Compress all JPEG
                     files into the Zip
                     archive XYZ.ZIP.


Interactive or Sequential
Commands can be executed one at a time by typing the command and pressing Enter. They can also be executed as a group, in which case the commands are typed into a "batch" or "script" file. The file name is typed on the command line, and pressing Enter causes each command to be executed in order. See batch file abc's, cmd abc's, command processor and PowerShell.


Windows Command Line
After the command prompt was launched, the command cd /stage switches focus to the STAGE folder. The dir *.cmd lists all the Windows batch files, and prepnew executes the commands in the prepNEW.cmd file.







Mac/Unix/Linux Command Line
This example from Mac OS X, which is a Unix-based operating system, shows two commands issued after the command line ("terminal window") was launched. The cd desktop switches focus to the desktop, and ls X* lists all files that begin with upper case "X."
References in periodicals archive ?
From tape backup to batch FTP transfers and distribution of sensitive materials to partners, PGP Command Line provides enterprises with robust encryption capabilities for their automated data processing applications.
WinRAR's main features are very strong general and multimedia compression, solid compression, archive protection from damage, processing of ZIP and other non-RAR archives, scanning archives for viruses, programmable self-extracting archives(SFX), authenticity verification, NTFS and Unicode support, strong AES encryption, support of multivolume archives, command line and graphical interface, drag-and-drop facility, wizard interface, theme support and Windows x64 shell integration.
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The following search functions are available within the command line interface:
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com/ (that's your first Web address) into the command line.
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The new GitHub app features all the Git command line tools, and even comes with support for PowerShell - which is Microsoft's answer to Linux's much better command line shell.
Intended for experienced computer users new to GNU/Linux, this comprehensive guide to the core functionality of the Linux command line provides detailed information on taking hands-on control of one's operating system.
Sections cover command line fundamentals, systems administration using the command line, file system and disk administration, active directory administration, and network administration.
a global leader in enterprise data security and encryption solutions, has announced PGP(R) Command Line for IBM(R) zSeries(R) and IBM(R) iSeries(TM) to deliver proven PGP encryption to mainframe and mid-range platforms.