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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.


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