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PROGRAM:

NAME

gmtdefaults - List current GMT default parameters

SYNOPSIS

gmtdefaults [ [u|s] ]

Note: No space is allowed between the option flag and the associated arguments.

DESCRIPTION

gmtdefaults lists the GMT parameter defaults if the option -D is used. There are three
ways to change some of the settings: (1) Use the command gmtset, (2) use any text editor
to edit the file gmt.conf in your home, ~/.gmt or current directory (if you do not have
this file, run gmtset -D to get one with the system default settings), or (3) override any
parameter by specifying one or more --PARAMETER=VALUE statements on the command line of
any GMT command (PARAMETER and VALUE are any combination listed below). The first two
options are permanent changes until explicitly changed back, while the last option is
ephemeral and only applies to the single GMT command that received the override. GMT can
provide default values in US or SI units. This choice is determined at compile time.

REQUIRED ARGUMENTS

None.

OPTIONAL ARGUMENTS

-D Print the system GMT defaults to standard output. Append u for US defaults or s for
SI defaults. [-D alone gives the version selected at compile time; If -D is
omitted, the user's currently active defaults are printed.]

-^ or just -
Print a short message about the syntax of the command, then exits (NOTE: on Windows
use just -).

-+ or just +
Print an extensive usage (help) message, including the explanation of any
module-specific option (but not the GMT common options), then exits.

-? or no arguments
Print a complete usage (help) message, including the explanation of options, then
exits.

--version
Print GMT version and exit.

--show-datadir
Print full path to GMT share directory and exit.

Your currently active defaults come from the gmt.conf file in the current working
directory, if present; else from the gmt.conf file in your home directory, if present;
else from the file ~/.gmt/gmt.conf if present; else from the system defaults set at the
time GMT was compiled.

GMT PARAMETERS

Read the gmt.conf man page for a full list of the parameters that are user-definable in
GMT.

EXAMPLES

To get a copy of the GMT parameter defaults in your home directory, run

gmt defaults -D > ~/gmt.conf

You may now change the settings by editing this file using a text editor of your choice,
or use gmtset to change specified parameters on the command line.

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