docs: fix bugs in contribution, getting started guides (#18216)

Co-authored-by: Greg Becker <becker33@llnl.gov>
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

2 files changed, 24 insertions, 7 deletions

diff --git a/lib/spack/docs/contribution_guide.rst b/lib/spack/docs/contribution_guide.rst
index 2fc6546f5e..37cf9091bd 100644
--- a/lib/spack/docs/contribution_guide.rst
+++ b/lib/spack/docs/contribution_guide.rst
@@ -146,7 +146,9 @@ you want to know about.  For example, to see just the tests in
 .. command-output:: spack test --list-long lib/spack/spack/test/architecture.py
 
 You can also combine any of these options with a ``pytest`` keyword
-search.  For example, to see the names of all tests that have "spec"
+search.  See the `pytest usage docs
+<https://docs.pytest.org/en/stable/usage.html#specifying-tests-selecting-tests>`_:
+for more details on test selection syntax. For example, to see the names of all tests that have "spec"
 or "concretize" somewhere in their names:
 
 .. command-output:: spack test --list-names -k "spec and concretize"
@@ -159,7 +161,7 @@ argument to ``pytest``:
 
 .. code-block:: console
 
-   $ spack test -s spack test --list-long lib/spack/spack/test/architecture.py::test_platform
+   $ spack test -s --list-long lib/spack/spack/test/architecture.py::test_platform
 
 Unit tests are crucial to making sure bugs aren't introduced into
 Spack. If you are modifying core Spack libraries or adding new
@@ -325,7 +327,7 @@ Once all of the dependencies are installed, you can try building the documentati
 
 .. code-block:: console
 
-   $ cd "$SPACK_ROOT/lib/spack/docs"
+   $ cd path/to/spack/lib/spack/docs/
    $ make clean
    $ make
 
diff --git a/lib/spack/docs/getting_started.rst b/lib/spack/docs/getting_started.rst
index 9ce01ae222..f9e6c0fa57 100644
--- a/lib/spack/docs/getting_started.rst
+++ b/lib/spack/docs/getting_started.rst
@@ -53,22 +53,37 @@ in the ``SPACK_ROOT`` environment variable.  Add ``$SPACK_ROOT/bin``
 to your path and you're ready to go:
 
 .. code-block:: console
-
+   
+   # For bash/zsh users
+   $ export SPACK_ROOT=/path/to/spack
    $ export PATH=$SPACK_ROOT/bin:$PATH
+
+   # For tsch/csh users 
+   $ setenv SPACK_ROOT /path/to/spack
+   $ setenv PATH $SPACK_ROOT/bin:$PATH
+
+   # For fish users
+   $ set -x SPACK_ROOT /path/to/spack
+   $ set -U fish_user_paths /path/to/spack $fish_user_paths
+
+.. code-block:: console
+
    $ spack install libelf
 
 For a richer experience, use Spack's shell support:
 
 .. code-block:: console
 
+   # Note you must set SPACK_ROOT
+
    # For bash/zsh users
-   $ export SPACK_ROOT=/path/to/spack
    $ . $SPACK_ROOT/share/spack/setup-env.sh
 
-   # For tcsh or csh users (note you must set SPACK_ROOT)
-   $ setenv SPACK_ROOT /path/to/spack
+   # For tcsh/csh users
    $ source $SPACK_ROOT/share/spack/setup-env.csh
 
+   # For fish users
+   $ source $SPACK_ROOT/share/spack/setup-env.fish
 
 This automatically adds Spack to your ``PATH`` and allows the ``spack``
 command to be used to execute spack :ref:`commands <shell-support>` and