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+.. _controlling_permissions:
+
+Controlling permissions of installations
+========================================
+
+Various configuration options and easyconfig parameters are available that control (group) ownership and permissions of
+software installations performed with EasyBuild.
+
+These can be used to protect installations of licensed software, or to make sure that installations can be
+modified/removed by other users which can be interesting in case multiple users are performing installations using
+EasyBuild to a shared filesystem.
+
+.. note::
+
+  These options and parameters only affect the permissions and (group) ownership of the actual software installations
+  themselves, not of the module files that are generated for them or other files being generated/copied (e.g. the
+  easyconfig file that is copied to the easyconfigs repository).
+
+Configuration options
+---------------------
+
+These configuration options are *global*, in the sense that they apply to all software installations being performed
+when they are set.
+
+We'll refer to them via their respective command line option, but just like all other configuration option these can
+also be set via an EasyBuild configuration file or via an ``$EASYBUILD*`` environment variable
+(see :ref:`configuration_consistency`).
+
+Group ownership (``--group``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Force group-writeable installations (``--group-writable-installdir``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Forced read-only installations (``--read-only-installdir``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+GID bit (``--set-gid-bit``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Sticky bit (``--sticky-bit``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+File creation mode mask (``--umask``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+
+Easyconfig parameters
+---------------------
+
+These easyconfig parameters can be defined in easyconfig files to control ownership/permission aspects for the
+particular installation that results from using that easyconfig file.
+
+Group ownership (``group``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Post installation commands (``postinstallcmds``) ??
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. can be useful for fixing permissions of individual files via chmod/chown