dc: Invocation

 
 2 Invocation
 ************
 
 'dc' may be invoked with the following command-line options:
 
 '-e EXPR'
 '--expression=EXPR'
      Evaluate EXPR as 'dc' commands.
 
 '-f FILE'
 '--file=FILE'
      Read and evaluate 'dc' commands from FILE.
 
 '-h'
 '--help'
      Print a usage message summarizing the command-line options, then
      exit.
 
 '-V'
 '--version'
      Print the version information for this program, then exit.
 
    If any command-line parameters remain after processing the options,
 these parameters are interpreted as additional FILEs whose contents are
 read and evaluated.  A file name of '-' refers to the standard input
 stream.  If no '-e' option was specified, and no files were specified,
 then the standard input will be read for commands to evaluate.