dc: Invocation
2 Invocation
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'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.