command line option

command line option

(software)
(Or "option", "flag", "switch", "option switch") An argument to a command that modifies its function rather than providing data. Options generally start with "-" in Unix or "/" in MS-DOS. This is usually followed by a single letter or occasionally a digit. More recently, GNU software adopted the --longoptionname style, usually in addition to traditional, single-character, -x style equivalents.

Some commands require each option to be a separate argument, introduced by a new "-" or "/", others allow multiple option letters to be concatenated into a single argument with a single "-" or "/", e.g. "ls -al". A few Unix commands (e.g. ar, tar) allow the "-" to be omitted. Some options may or must be followed by a value, e.g. "cc prog.c -o prog", sometimes with and sometimes without an intervening space.

getopt and getopts are commands for parsing command line options. There is also a C library routine called getopt for the same purpose.
References in periodicals archive ?
The first tshark command line option that I normally use is "-D", which provides me an enumerated list of interfaces that I can use for capturing.
Calibre has become the industry standard in this market because of its speed and ease of use, and multithreading gives our customers an even greater boost with a simple command line option.
In addition, build environments and make files can be migrated since the PowerPC compilers maintain command line option.
The specific information available will be highly dependent upon the hardware, collector version, and command line options used for the collection.
He presents each command of this version of the software on its own page and includes command line options, dialog box and palette options, toolbar icons, shortcut menus, related commands and system variables, figures, and tips.
The text also contains a reference section on the different kernel command line options, the kernel build options, and a select few of the different kernel configuration options; an appendix listing helpful utilities; and a bibliography of useful references.
Several new command line options have also been added to make WinRAR in the command line mode more user friendly.
Users can examine specific fields of interest, stack and combine queries for targeted research, execute complex strategies with the use of command prompts, and take advantage of many other command line options.
has introduced the latest release of its advanced password synchronization product, SecurPass, featuring extensive Applications Programming Interfaces (APIs), customizable user exits, multiple command line options, and customization of restricted password files for international language applications.
New command line options for automating transfers consisting of unlimited numbers of files
All command line options are available in the help message of the tool:

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