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1 definition found
 for command line option
From The Free On-line Dictionary of Computing (30 December 2018) :

  command line option
      (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.

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