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hello
The format for running the hello
program is:
hello option ...
hello
supports the following options:
For the --help output of GNU programs, it's strongly
encouraged to include a brief (one or two sentences) description of
what the program does, as well as the synopsis of how to run the
program. Any environment variables which affect execution should also
be mentioned (Hello doesn't have any).
hello
on
standard output and then exit successfully.