Update Environment Modules installation doc

Update installation guidelines to use latest Environment Modules
version.

Fixes #263

docs/installation.md

@@ -375,7 +375,7 @@ Additional notes:
   (`lua-posix`, `lua-filesystem`) to be available
     * Tcl (`tclsh`) must also be available for Lmod to support module files in `Tcl` syntax
 * a guide to installing Tcl/C environment modules without having root
-  permissions is available at [Installing environment modules without root permissions][installing_env_mod_c].
+  permissions is available at [Installing environment modules without root permissions][installing_env_mod].
 * a guide to installing Lmod without having root permissions is available at
   [Installing Lmod without root permissions][installing_lmod].
 

docs/installing-environment-modules-without-root-permissions.md

@@ -1,25 +1,22 @@
-# Installing environment modules without root permissions {: #installing_env_mod_c }
+# Installing Environment Modules without root permissions {: #installing_env_mod }
 
-This short guide will explain how to install the standard environment
-modules Tcl/C software package without root permissions on a Linux or
+This short guide will explain how to install the standard Environment
+Modules software package without root permissions on a Linux or
 Mac OS X system, together with Tcl on which it depends.
 
 ## Tcl
 
 1. Go to <https://www.tcl-lang.org> and download the latest Tcl sources. At
-    the time of writing, the latest available Tcl version was 8.5.15,
+    the time of writing, the latest available Tcl version was 8.6.14,
     which can be downloaded from
-    [here](https://prdownloads.sourceforge.net/tcl/tcl8.5.15-src.tar.gz).
-    The remainder of these commands will assume Tcl v8.5.15 is being
-    installed, you may need to adjust them accordingly. **Note**: Stick
-    to Tcl v8.5.x, don't consider using the more recent v8.6.x or
-    higher, since the environment modules package is not compatible with
-    those Tcl versions.
+    [here](https://prdownloads.sourceforge.net/tcl/tcl8.6.14-src.tar.gz).
+    The remainder of these commands will assume Tcl v8.6.14 is being
+    installed, you may need to adjust them accordingly.
 
 1. Unpack the Tcl source tarball:
 
     ``` shell
-    tar xfvz tcl8.5.15-src.tar.gz
+    tar xfvz tcl8.6.14-src.tar.gz
     ```
 
 1. Pick a location where you will install Tcl. It should be a directory
@@ -30,12 +27,12 @@ Mac OS X system, together with Tcl on which it depends.
     the `configure` script using the `--prefix` option:
 
     ``` shell
-    cd tcl8.5.15/unix
+    cd tcl8.6.14/unix
     ./configure --prefix=$HOME/.local/Tcl
     ```
 
-    If you're building Tcl and environment modules on Mac, you should
-    run `configure` in the `tcl8.5.15/macosx` directory instead.
+    If you're building Tcl and Environment Modules on Mac, you should
+    run `configure` in the `tcl8.6.14/macosx` directory instead.
 
 1. Next, build Tcl using the `make` command. If the system you are
     building on has multiple cores, running make in parallel will speed
@@ -54,38 +51,37 @@ Mac OS X system, together with Tcl on which it depends.
     make install
     ```
 
-**All done!** Now you are ready to build the environment modules
+**All done!** Now you are ready to build the Environment Modules
 package, which requires Tcl.
 
 ## Environment Modules
 
-1. Download the latest source tarball for the environment modules tools
+1. Download the latest source tarball for the Environment Modules tools
     from <https://modules.sourceforge.net>. At the time of writing, the
-    latest available version is 3.2.10 which can be downloaded [from
-    here](https://prdownloads.sourceforge.net/modules/modules-3.2.10.tar.gz).
+    latest available version is 5.4.0 which can be downloaded [from
+    here](https://prdownloads.sourceforge.net/modules/modules-5.4.0.tar.gz).
 
 1. Unpack the downloaded source tarball:
 
     ``` shell
-    tar xfvz modules-3.2.10.tar.gz
+    tar xfvz modules-5.4.0.tar.gz
     ```
 
 1. Configure the build, again use `--prefix` to specify where to
-    install the environment modules tool in the end. If you needed to
+    install the Environment Modules tool in the end. If you needed to
     install Tcl by hand as outlined in the previous section, you'll also
     need to specify where it was installed using the `--with-tcl`
     option:
 
     ``` shell
-    cd modules-3.2.10
+    cd modules-5.4.0
     ./configure --prefix=$HOME/.local/environment-modules --with-tcl=$HOME/.local/Tcl/lib
     ```
 
-1. Build with `make`, consider parallel build if your system is recent
-    enough:
+1. Build with `make`:
 
     ``` shell
-    make -j 4
+    make
     ```
 
 1. Install:
@@ -98,17 +94,17 @@ Alright, now just one more thing...
 
 ## Set up your environment
 
-Because you've installed environment modules and Tcl in a non-default
+Because you've installed Environment Modules and Tcl in a non-default
 location, you need to make sure your environment is setup up correctly
 to use them.
 
 To make a long story short, these are the commands you need to execute:
 
 ``` shell
-export PATH=$HOME/.local/environment-modules/Modules/3.2.10/bin:$PATH
+export PATH=$HOME/.local/environment-modules/bin:$PATH
 export LD_LIBRARY_PATH=$HOME/.local/Tcl/lib:$LD_LIBRARY_PATH
 # adjust line below if you're using a shell other than bash, check with 'echo $SHELL'
-source $HOME/.local/environment-modules/Modules/3.2.10/init/bash
+source $HOME/.local/environment-modules/init/bash
 ```
 
 !!! tip