gdaldem
Tool to analyze and visualize digital elevation models (DEM).
TLDR
Compute the hillshade of a DEM
$ gdaldem hillshade [path/to/input.tif] [path/to/output.tif]
Compute the slope of a DEM
$ gdaldem slope [path/to/input.tif] [path/to/output.tif]
Compute the aspect of a DEM
$ gdaldem aspect [path/to/input.tif] [path/to/output.tif]
