How to set datadir and see all environment variables

Q&A
1

Challenge: I want to collect all files I regularly use in a folder and use in gmt scripts without having to supply full/relative paths - just filename. The datadir variable sounds promising. But…

  • How do you set the datadir variable? This is an environment variable, right?

    $ gmt --show-datadir
Not set

    or

    $ gmt-config --datadir
Not set

  • I’ve been looking in the docs, but I can’t see any definite place for where I can look up all environment variables used by gmt and that can be set. Any know where, if it exists?

Edit:

In ConfigUserAdvancedTemplate.cmake I see

# Set share installation path [share or share/gmt${GMT_INSTALL_NAME_SUFFIX}]:
#set (GMT_DATADIR "share/gmt")

But assuming this really is the share dir and has nothing to do with the datadir that you get from --show-datadir;

$ gmt --show-sharedir
/usr/local/share