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g.accessgrass - Online in the Cloud

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This is the command g.accessgrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



g.access - Controls access to the current mapset for other users on the system.
If no option given, prints current status.


general, map management, permission


g.access --help
g.access [group=string] [other=string] [--help] [--verbose] [--quiet] [--ui]

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog

Access for group
Options: grant, revoke

Access for others
Options: grant, revoke


This program allows the user to control access to the current mapset. Normally, any user
can read data from any GRASS mapset. But sometimes it is desirable to prohibit access to
certain sensitive data. The g.access command allows a user to restrict read and execute
access to the current mapset (see UNIX chmod command). g.access will not modify write
access to the current mapset.

The user may, for example, allow only users in the same UNIX group to read data files in
the mapset, or restrict the mapset to personal use only.


Under GRASS, access to the mapset PERMANENT must be open to all users. This is because
GRASS looks for the user’s default geographic region definition settings and the location
TITLE in files that are stored under the PERMANENT mapset directory. The g.access
command, therefore, will not allow you to restrict access to the PERMANENT mapset.

The g.mapsets command isn’t smart enough to tell if access to a specified mapset is
restricted, and the user is therefore allowed to include the names of restricted mapsets
in his search path. However, the data in a restricted mapset is still protected; any
attempts to look for or use data in a restricted mapset will fail. The user will simply
not see any data listed for a restricted mapset.

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