diff --git a/.config/bash/module/Nix.sh b/.config/bash/module/Nix.sh
index 699c11e..55a6a31 100644
--- a/.config/bash/module/Nix.sh
+++ b/.config/bash/module/Nix.sh
@@ -43,3 +43,8 @@ function nix_clean() {
 	nix-collect-garbage -d
 	[[ "${UID}" = 0 ]] && nix-store --gc
 }
+
+# Spawn temporary shell.
+function shell() {
+	nix-shell -p "${@}"
+}
diff --git a/.doc/Bash.md b/.doc/Bash.md
index 32454dd..0937711 100644
--- a/.doc/Bash.md
+++ b/.doc/Bash.md
@@ -260,6 +260,7 @@ Command|Description
 `nix_update`|Update system (rebuild). 
 `nix_upgrade`|Upgrade system. 
 `nix_clean`|Free up root space. 
+`shell`|Spawn temporary shell. 
 
 ## Notify.
 
diff --git a/.local/share/fonts/terminess/README.md b/.local/share/fonts/terminess/README.md
new file mode 100644
index 0000000..83a31eb
--- /dev/null
+++ b/.local/share/fonts/terminess/README.md
@@ -0,0 +1,64 @@
+# Nerd Fonts
+
+This is an archived font from the Nerd Fonts release v3.1.1.
+
+For more information see:
+* https://github.com/ryanoasis/nerd-fonts/
+* https://github.com/ryanoasis/nerd-fonts/releases/latest/
+
+# Terminus
+
+**Terminus TTF** is a TrueType version of Terminus Font, a fixed-width bitmap font optimized for long work with computers.
+
+https://terminus-font.sourceforge.net/
+
+For more information have a look at the upstream website: https://files.ax86.net/terminus-ttf/
+
+Version: 4.49.2
+
+## Why `Terminess` and not `Terminus`?
+
+What's in a name? The reason for the name change is to comply with the SIL Open Font License (OFL), in particular the [Reserved Font Name mechanism][SIL-RFN]
+
+Some fonts have parts of their name "reserved" per the [Reserved Font Name mechanism][SIL-RFN]:
+> No Modified Version of the Font Software may use the Reserved Font
+> Name(s) unless explicit written permission is granted by the corresponding
+> Copyright Holder. This restriction only applies to the primary font name as
+> presented to the users.
+
+- The main goals seem to be to: `Avoid collisions`, `Protect authors`, `Minimize support`, and `Encourage derivatives`
+
+See the [Reserved Font Name section][SIL-RFN] for additional information
+
+## Which font?
+
+### TL;DR
+
+* Pick your font family:
+  * If you are limited to monospaced fonts (because of your terminal, etc) then pick a font with `Nerd Font Mono` (or `NFM`).
+  * If you want to have bigger icons (usually around 1.5 normal letters wide) pick a font without `Mono` i.e. `Nerd Font` (or `NF`). Most terminals support this, but ymmv.
+  * If you work in a proportional context (GUI elements or edit a presentation etc) pick a font with `Nerd Font Propo` (or `NFP`).
+
+### Ligatures
+
+Ligatures are generally preserved in the patched fonts.
+Nerd Fonts `v2.0.0` had no ligatures in the `Nerd Font Mono` fonts, this has been dropped with `v2.1.0`.
+If you have a ligature-aware terminal and don't want ligatures you can (usually) disable them in the terminal settings.
+
+### Explanation
+
+Once you narrow down your font choice of family (`Droid Sans`, `Inconsolata`, etc) and style (`bold`, `italic`, etc) you have 2 main choices:
+
+#### `Option 1: Download already patched font`
+
+ * For a stable version download a font package from the [release page](https://github.com/ryanoasis/nerd-fonts/releases)
+ * Or download the development version from the folders here
+
+#### `Option 2: Patch your own font`
+
+ * Patch your own variations with the various options provided by the font patcher (i.e. not include all symbols for smaller font size)
+
+For more information see: [The FAQ](https://github.com/ryanoasis/nerd-fonts/wiki/FAQ-and-Troubleshooting#which-font)
+
+[SIL-RFN]:http://scripts.sil.org/cms/scripts/page.php?item_id=OFL_web_fonts_and_RFNs#14cbfd4a
+
diff --git a/.local/share/fonts/terminess/TerminessNerdFont-Bold.ttf b/.local/share/fonts/terminess/TerminessNerdFont-Bold.ttf
index c59b3a6..cc8b9b7 100644
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diff --git a/.local/share/fonts/terminess/TerminessNerdFont-BoldItalic.ttf b/.local/share/fonts/terminess/TerminessNerdFont-BoldItalic.ttf
index d09f280..f60b801 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFont-BoldItalic.ttf and b/.local/share/fonts/terminess/TerminessNerdFont-BoldItalic.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFont-Italic.ttf b/.local/share/fonts/terminess/TerminessNerdFont-Italic.ttf
index 387639e..8b60838 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFont-Italic.ttf and b/.local/share/fonts/terminess/TerminessNerdFont-Italic.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFont-Regular.ttf b/.local/share/fonts/terminess/TerminessNerdFont-Regular.ttf
index 86c2660..e73cbd8 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFont-Regular.ttf and b/.local/share/fonts/terminess/TerminessNerdFont-Regular.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontMono-Bold.ttf b/.local/share/fonts/terminess/TerminessNerdFontMono-Bold.ttf
index f2e7fb6..c3e5513 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontMono-Bold.ttf and b/.local/share/fonts/terminess/TerminessNerdFontMono-Bold.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontMono-BoldItalic.ttf b/.local/share/fonts/terminess/TerminessNerdFontMono-BoldItalic.ttf
index 96409f9..5e3ffda 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontMono-BoldItalic.ttf and b/.local/share/fonts/terminess/TerminessNerdFontMono-BoldItalic.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontMono-Italic.ttf b/.local/share/fonts/terminess/TerminessNerdFontMono-Italic.ttf
index 142cb8e..bc9e2ed 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontMono-Italic.ttf and b/.local/share/fonts/terminess/TerminessNerdFontMono-Italic.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontMono-Regular.ttf b/.local/share/fonts/terminess/TerminessNerdFontMono-Regular.ttf
index a729686..7d56730 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontMono-Regular.ttf and b/.local/share/fonts/terminess/TerminessNerdFontMono-Regular.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontPropo-Bold.ttf b/.local/share/fonts/terminess/TerminessNerdFontPropo-Bold.ttf
index e4540dc..47295c5 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontPropo-Bold.ttf and b/.local/share/fonts/terminess/TerminessNerdFontPropo-Bold.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontPropo-BoldItalic.ttf b/.local/share/fonts/terminess/TerminessNerdFontPropo-BoldItalic.ttf
index dfc23e8..70a16ee 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontPropo-BoldItalic.ttf and b/.local/share/fonts/terminess/TerminessNerdFontPropo-BoldItalic.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontPropo-Italic.ttf b/.local/share/fonts/terminess/TerminessNerdFontPropo-Italic.ttf
index 409e6a6..724ce45 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontPropo-Italic.ttf and b/.local/share/fonts/terminess/TerminessNerdFontPropo-Italic.ttf differ
diff --git a/.local/share/fonts/terminess/TerminessNerdFontPropo-Regular.ttf b/.local/share/fonts/terminess/TerminessNerdFontPropo-Regular.ttf
index aa7bd9b..58c001e 100644
Binary files a/.local/share/fonts/terminess/TerminessNerdFontPropo-Regular.ttf and b/.local/share/fonts/terminess/TerminessNerdFontPropo-Regular.ttf differ
diff --git a/.local/share/fonts/terminess/readme.md b/.local/share/fonts/terminess/readme.md
deleted file mode 100644
index 9f2e700..0000000
--- a/.local/share/fonts/terminess/readme.md
+++ /dev/null
@@ -1,8 +0,0 @@
-
-# Nerd Fonts
-
-This is an archived font from a Nerd Fonts release.
-
-For more information see:
-* https://github.com/ryanoasis/nerd-fonts/
-* https://github.com/ryanoasis/nerd-fonts/releases/latest/