How to list the available GRASS modules in command line

Question

Using GRASS shell, I know that I can use the -help suffix to get information about a particular module.

E.g. r.relief -help will return this:

Description:
 Creates shaded relief map from an elevation map (DEM).

Keywords:
 raster, elevation, relief, terrain, hillshade

Usage:
 r.relief input=name output=name [altitude=value] [azimuth=value]
   [zscale=value] [scale=value] [units=string] [--overwrite] [--help]
   [--verbose] [--quiet] [--ui]

Flags:
 --o   Allow output files to overwrite existing files
 --h   Print usage summary
 --v   Verbose module output
 --q   Quiet module output
 --ui  Force launching GUI dialog

Parameters:
     input   Name of input raster map
    output   Name for output shaded relief map
              Name for output raster map
  altitude   Altitude of the sun in degrees above the horizon
             options: 0-90
             default: 30
   azimuth   Azimuth of the sun in degrees to the east of north
             options: 0-360
             default: 270
    zscale   Factor for exaggerating relief
             default: 1
     scale   Scale factor for converting meters to elevation units
             default: 1
     units   Elevation units (overrides scale factor)
             options: intl,survey
              intl: international feet
              survey: survey feet

Therefore, it seems reasonable to me, that there must be a command to list all the available modules names. Is there? What?

Answer 1

There is a relatively new module g.search.module which lists modules based on keywords. Perhaps could be helpful for what you are trying to do. This module is so far in GRASS 7.1 only.

Answer 2

I don't know of a command that lists the modules per se. But if I wanted to list the modules that were available to me, I would list what was in the bin folder, e.g. on Windows,

dir %GISBASE%\bin\r.*

I looked in the env.bat file, and bin appears to be the only folder that is added to the path and has GRASS modules in it. So it seems the result of listing files in bin would accurately reflect the available modules.

Answer 3

Not exactly what I was looking for, but until now this the best solution for versions below prior to 7.1 that I was able to find.

In the command line, during a GRASS session, one can type for instance, v. and then press the TAB key twice, then say yes when asked to display all possibilities. I will show all vector modules.

GRASS 7.0.3 (alaska):~/git-repos/QGIS-Documentation > v.
Display all 123 possibilities? (y or n)
v.buffer               v.in.lines             v.out.svg
v.build                v.in.mapgen            v.out.vtk
v.build.all            v.in.ogr               v.overlay
v.build.polylines      v.in.region            v.pack
v.category             v.in.wfs               v.parallel
v.centroids            v.kcv                  v.patch
v.class                v.kernel               v.perturb
v.clean                v.krige                v.proj
v.colors               v.label                v.qcount
v.colors.out           v.lidar.correction     v.random
v.db.addcolumn         v.lidar.edgedetection  v.rast.stats
v.db.addtable          v.lidar.growing        v.reclass
v.db.connect           v.lrs.create           v.rectify
v.db.dropcolumn        v.lrs.label            v.report
v.db.droprow           v.lrs.segment          v.sample
v.db.droptable         v.lrs.where            v.segment
v.db.join              v.mkgrid               v.select
v.db.reconnect.all     v.neighbors            v.split
v.db.renamecolumn      v.net                  v.support
v.db.select            v.net.alloc            v.surf.bspline
v.db.univar            v.net.allpairs         v.surf.idw
v.db.update            v.net.bridge           v.surf.rst
v.delaunay             v.net.centrality       v.timestamp
v.dissolve             v.net.components       v.to.3d
v.distance             v.net.connectivity     v.to.db
v.drape                v.net.distance         v.to.lines
v.edit                 v.net.flow             v.to.points
v.external             v.net.iso              v.to.rast
v.external.out         v.net.path             v.to.rast3
v.extract              v.net.salesman         v.transform
v.extrude              v.net.spanningtree     v.type
v.generalize           v.net.steiner          v.univar
v.hull                 v.net.timetable        v.unpack
v.import               v.net.visibility       v.vect.stats
v.in.ascii             v.normal               v.vol.rst
v.in.db                v.out.ascii            v.voronoi
v.in.dxf               v.out.dxf              v.what
v.in.e00               v.outlier              v.what.rast
v.info                 v.out.ogr              v.what.rast3
v.in.geonames          v.out.postgis          v.what.strds
v.in.lidar             v.out.pov              v.what.vect

Note: I'm not sure if it will work in non-linux machines.