View source for User environment - The usage of module 2016

We use the module environment, which has a lot of advantages, is very flexible (and user-friendly), and even allows one to use different versions of the same software concurrently on the same system. You can see a list of all available modules by typing
 module avail

To load a given module:
 module load <name of the module>

The modules system uses a hierarchical file structure, i.e., sometimes (whenever there are ambiguities) you may have to specify a path, as in:
 module load intel/2016b

To revert all changes made by a given module (environment variables, paths, etc.):
 module unload <name of the module>

You could also create a "state" of loaded modules that you prefer. Load every modules you want and safe the "state" with:
 module store

If you loaded toomany, unneeded modules and want to go back to your safed "state", simply use following command:
 module restore

You can unload '''all''' currently loaded modules with the command:
 module purge

'''Keep in mind that you have to load "hpc-uniol-env", otherwise the paths to all available modules arent set!'''

A short overview of the options are given in following table (a full list you can get by ''module help'')

{| style="background-color:#eeeeff;" cellpadding="10" border="1" cellspacing="0" 
|- style="background-color:#ddddff;"
!Option
!Description
|-
| ''avail [<prefix>]''
| Shows a list of all available modules. Optionally one can specify a ''prefix'' to limit the output, e.g. ''module avail netcdf'' will show only available modules of netcdf. 
|-
| ''purge''
| Remove all loaded modules. 
|-
| ''help''
| Returns a short help with all available options of the command module.
|-
| ''list''
| Print a list with all loaded modules.
|-
| ''load <module_name>''
| Loads the module ''module_name''. If the name includes not the full module name (separated by /) then the latest version of the software is loaded.
|-
| ''show <module_name>''
| Shows additional information about a specific module, e.g. pathen and environment variables set by the module.
|-
| ''unload <module_name>''
| Remove the module ''module_name''.
|-
|}

== Hidden modules ==

You might have noticed that the output of the command 
 module avail
is pretty cleaned and organized. Its not flooded with modules that are only installed because they are a dependency of an other module. This is the fact because we have hidden many modules to keep the output of ''module avail'' clear.

These hidden modules are in a different, hidden path. If you need these modules, you will need to paste the following line of code once per login-session:
 module use /cm/shared/uniol/modules/.hidden

Using the command ''module avail'' will now show you a long list of modules. You are now also able to load these modules with
 module load