Move help and deprecated to their own files

arch/base.md

@@ -51,14 +51,6 @@ I have instructions for building a:
     - [CUPS Printing](#cups-printing)
     - [Yubikey](#yubikey)
   - [Bashrc](#bashrc)
-  - [Unecessary](#unecessary)
-    - [Plymouth Background Image](#plymouth-background-image)
-  - [Help](#help)
-    - [Update Grub](#update-grub)
-    - [Downgrading Kernel](#downgrading-kernel)
-  - [Deprecated](#deprecated)
-    - [Deprecated Security](#deprecated-security)
-      - [Firejail](#firejail)
 
 ## Installation
 
@@ -762,6 +754,7 @@ AMD
 
 ```bash
 pacman -S vulkan-radeon libva-utils libva-mesa-driver xf86-video-amdgpu
+vainfo
 ```
 
 ### Power Management
@@ -958,6 +951,8 @@ sudo systemctl enable --now pcscd
 
 ## Bashrc
 
+Don't do this if you installed `zsh`
+
 ~/.bashrc
 
 ```bash
@@ -1050,100 +1045,4 @@ alias lsc='find . -type f | wc -l'
 
 ## ls sort by last modified ##
 alias lmt='ls -t -1'
-```
-
-## Unecessary
-
-### Plymouth Background Image
-
-1. `sudo cp image.png /usr/share/plymouth/themes/spinner/background-tile.png`
-1. `sudo plymouth-set-default-theme -R spinner`
-
-## Help
-
-### Update Grub
-
-1. `grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=BOOT`
-1. `cp /boot/EFI/BOOT/grubx64.efi /boot/EFI/BOOT/bootx64.efi`
-
-### Downgrading Kernel
-
-You can find old kernel versions at <https://archive.archlinux.org/packages/l/linux/>
-
-You can find old kernel-header versions at <https://archive.archlinux.org/packages/l/linux-headers/>
-
-If you want to downgrade to a previously installed kernel you can use pacman cache:
-
-1. `cd /var/cache/pacman/pkg`
-2. `pacman -U linux-x.x.x.arch1-1-x86_64.pkg.tar.zst linux-headers-x.x.x.arch1-1-x86_64.pkg.tar.zst`
-3. `reboot`
-
-If you want to downgrade to a kernel that wasn't previously installed:
-
-1. Download linux... and linux-headers... from above
-2. `pacman -U linux-x.x.x.arch1-1-x86_64.pkg.tar.zst linux-headers-x.x.x.arch1-1-x86_64.pkg.tar.zst`
-3. `reboot`
-
-## Deprecated
-
-### Deprecated Security
-
-#### Firejail
-
-Don't use firejail, it's a suid binary which only runs in userspace. Apparmor does
-almost exactly the same thing but runs in the kernel at boot and protects you more
-completely. I'm leaving this here in case you're interested but realistically you
-should just learn apparmor.
-
-Firejail launches supported applications in a sandboxed environment where it limits access
-to system files and resources.
-
-For example:
-
-- Firefox will not be able to access more than a small subset of your home directory.
-- VSCode will not be able to acces ~/.config/autostart.
-
-1. `sudo pacman -S firejail`
-2. `sudo apparmor_parser -r /etc/apparmor.d/firejail-default`
-3. `sudo firecfg`
-4. `firecfg --fix`
-5. `sudo rm /usr/local/bin/dnsmasq` (this fixes an issue with virsh network start)
-6. Add a pacman hook to apply firejail on install
-
-    /etc/pacman.d/hooks/firejail.hook
-
-    ```conf
-    [Trigger]
-    Type = Path
-    Operation = Install
-    Operation = Upgrade
-    Operation = Remove
-    Target = usr/bin/*
-    Target = usr/share/applications/*.desktop
-
-    [Action]
-    Description = Configure symlinks in /usr/local/bin based on firecfg.config...
-    When = PostTransaction
-    Depends = firejail
-    Exec = /bin/sh -c 'firecfg >/dev/null 2>&1'
-    ```
-
-You can run firejail with noprofile to fix access issues (like firefox gnome connector)
-
-```bash
-firejail --noprofile firefox
-```
-
-You'll probably want to enable the following
-
-`sudo cat /etc/firejail/firejail.config | grep -e '^[^#].*'`
-
-/etc/firejail/firejail.config
-
-```conf
-browser-disable-u2f no
-chroot yes
-firejail-prompt yes
-force-nonewprivs yes
-tracelog yes
-```
+```