usage(1)
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usage Command
retrieve a command description and usage examples
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SYNTAX
[ help ] usage [ -d ] [ -e ] [ -o ] [ command_name ]
DESCRIPTION
The DG/UX system Help Facility command usage retrieves
information about DG/UX system commands. With no argument, usage
displays a menu screen prompting the user for the name of a
command, or allows the user to retrieve a list of commands
supported by usage. The user may also exit to the shell by
typing q (for "quit).
After a command is selected, the user is asked to choose among a
description of the command, examples of typical usage of the
command, or descriptions of the command's options. Then, based
on the user's request, the appropriate information will be
printed.
A command name may also be entered at shell level as an argument
to usage. To receive information on the command's description,
examples, or options, the user may use the -d, -e, or -o options
respectively. (The default option is -d.)
From any screen in the Help Facility, a user may execute a
command via the shell (sh(1)) by typing a ! and the command to be
executed. The screen will be redrawn if the command that was
executed was entered at a first level prompt. If entered at any
other prompt level, only the prompt will be redrawn.
By default, the Help Facility scrolls the data that is presented
to the user. If you prefer to have the screen clear before
printing the data (non-scrolling), the shell environment variable
SCROLL must be set to no. This is done in the Bourne shell,
sh(1), by adding the following line to your .profile file (see
profile(4)): ``SCROLL=no; export SCROLL''. In the csh(1), add
the following line to your .login file: "setenv SCROLL no". If
you later decide that scrolling is desired, SCROLL must be set to
yes.
Information on each of the Help Facility commands (starter,
locate, usage, glossary, and help) is located on their respective
manual pages.
DG/UX 4.00 Page 1
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usage(1)
SEE ALSO
csh(1), glossary(1), help(1), locate(1), sh(1), starter(1).
term(5) in the Programmer's Reference for the DG/UX System.
WARNINGS
If the shell variable TERM (see sh(1)) is not set in the user's
.profile or login TERM will default to the terminal value type
450 (a hard-copy terminal). For a list of valid terminal types,
refer to term(5).
DG/UX 4.00 Page 2
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