Misc: setup, Helix, bash, packages, apps, font

- Setup: reorganize and add server specific setup
- Helix: use relative line numbers
- Bash: add aliases
- Packages: install GStreamer plugins for AV1 preview
- Apps: Video Trimmer
- Font: Simplified Chinese font priority fix

auto/bash/bash

@@ -19,6 +19,11 @@ PS1='${debian_chroot:+($debian_chroot)}\[\e[01;38;5;11m\]\u\[\e[00;38;5;208m\]@\
 PROMPT_DIRTRIM=3
 
 alias ls='ls --color'
+alias bat='batcat'
+alias mosh='mosh -o'
+alias cargo='cargo auditable'
+alias md='pulldown-cmark -TFSLH'
+alias auto-av1='nice ab-av1 auto-encode --min-samples 2 --keyint 2s --scd true'
 
 # Shows a oneline preview of all files under the folder after changing directory.
 

manual/helix/helix

@@ -37,6 +37,7 @@ space.i = ":toggle lsp.display-inlay-hints"
 space.u = ":update"
 
 [editor]
+line-number = "relative"
 auto-pairs = false
 bufferline = "multiple"
 rulers = [101]

setup/debian-server-setup.md

@@ -0,0 +1,43 @@
+# Debian Server Setup
+
+Here's the minimum setup I put on my Debian 12 Bookworm servers.
+
+## System configuration
+
+```
+# system updates
+sudo apt update
+sudo apt install -y openssh-server mosh ufw vim
+sudo apt upgrade -y
+sudo apt autoremove -y
+# use Vim
+sudo update-alternatives --config editor
+# OpenSSH & Mosh & UFW
+sudo groupadd --system ssh-users
+sudo usermod -aG ssh-users $(whoami)
+sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
+sudo wget \
+	https://git.duckduckwhale.com/DuckDuckWhale/dotfiles/raw/branch/main/system/sshd/sshd_config \
+	-O /etc/ssh/sshd_config
+sudo systemctl enable ssh --now
+sudo systemctl reload ssh
+sudo ufw limit OpenSSH # sudo ufw limit 22/tcp
+sudo ufw allow mosh # sudo ufw allow 60001:60999/udp # mosh profile includes unused 60000 & 61000
+sudo ufw enable
+# sanity check
+systemctl status ssh
+sudo ufw status
+su - $(whoami)
+# apply all settings
+sudo reboot
+```
+
+## User SSH keys
+
+```
+mkdir -p ~/.ssh
+chmod 700 ~/.ssh
+# insert your SSH public keys into the file
+touch ~/.ssh/authorized_keys
+chmod 600 ~/.ssh/authorized_keys
+```

setup/debian-setup.md

@@ -203,22 +203,35 @@ sudo chmod -R 700 /opt/grub
 	- Change `GRUB_TIMEOUT=10` to `GRUB_TIMEOUT=3`
 - `$ sudo update-grub`
 
-## OpenSSH Server & Mosh
+### OpenSSH Server & Mosh & UFW
 
+Installation and configuration:
 ```
 sudo apt install -y openssh-server mosh
 sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
 sudo cp ../system/sshd/sshd_config /etc/ssh/sshd_config
 sudo groupadd --system ssh-users
 sudo usermod -aG ssh-users $(whoami)
+sudo systemctl enable ssh --now
+sudo systemctl reload ssh
+```
+
+Firewall:
+```
+sudo ufw limit OpenSSH # sudo ufw limit 22/tcp
+sudo ufw allow mosh # sudo ufw allow 60001:60999/udp # mosh profile includes unused 60000 & 61000
+sudo ufw show added
+# check before you enable
+sudo ufw enable
+```
+
+Per user:
+```
 mkdir -p ~/.ssh
 chmod 700 ~/.ssh
+# insert your SSH public keys into this file
 touch ~/.ssh/authorized_keys
 chmod 600 ~/.ssh/authorized_keys
-# insert your SSH public keys into the file
-sudo ufw limit 22/tcp
-sudo ufw allow 60001:60999/udp
-sudo systemctl restart ssh
 ```
 
 ## See logs as admin

setup/ubuntu-setup.md

@@ -13,7 +13,7 @@ Here's my personal Ubuntu 23.04 setup.  (Make sure to use Wayland on Nvidia!)
 	- `sudo apt install arp-scan asciinema bookworm foliate gimp gnome-firmware gnome-games
 	  gnome-nettool gnome-packagekit gnome-passwordsafe gnome-shell-pomodoro gnome-usage gthumb
 	  heif-gdk-pixbuf heif-thumbnailer mkvtoolnix-gui openjdk-17-jdk pulseeffectsqpdf ranger
-	  syncplay virtualbox-qt vlc audacity f3 prusa-slicer cmake`
+	  syncplay virtualbox-qt vlc audacity f3 prusa-slicer cmake gstreamer1.0-plugins-bad`
 - Remove all snaps:
 	- ```
 	  # if this command fails, do the following then try again:
@@ -93,6 +93,8 @@ Here's my personal Ubuntu 23.04 setup.  (Make sure to use Wayland on Nvidia!)
 	- `flatpak install flathub com.obsproject.Studio`
 	- Background removal plugin:
 		- `flatpak install com.obsproject.Studio.Plugin.BackgroundRemoval`
+- Video Trimmer
+	- `flatpak install flathub org.gnome.gitlab.YaLTeR.VideoTrimmer`
 
 ## Optional Apps
 
@@ -158,11 +160,7 @@ Here's my personal Ubuntu 23.04 setup.  (Make sure to use Wayland on Nvidia!)
   echo '/swapfile none swap defaults 0 0' | sudo tee -a /etc/fstab > /dev/null
   ```
 
-### UFW
-
-`$ sudo ufw enable`
-
-### OpenSSH Server & Mosh
+### OpenSSH Server & Mosh & UFW
 
 Installation and configuration:
 ```
@@ -171,14 +169,17 @@ sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
 sudo cp ../system/sshd/sshd_config /etc/ssh/sshd_config
 sudo groupadd --system ssh-users
 sudo usermod -aG ssh-users $(whoami)
-sudo systemctl enable sshd --now
-sudo systemctl reload sshd
+sudo systemctl enable ssh --now
+sudo systemctl reload ssh
 ```
 
 Firewall:
 ```
-sudo ufw limit OpenSSH
-sudo ufw allow 60001:60999/udp
+sudo ufw limit OpenSSH # sudo ufw limit 22/tcp
+sudo ufw allow mosh # sudo ufw allow 60001:60999/udp # mosh profile includes unused 60000 & 61000
+sudo ufw show added
+# check before you enable
+sudo ufw enable
 ```
 
 Per user:
@@ -198,6 +199,16 @@ See the `system` folder and run each script as they apply to your installation.
 
 `sudo usermod -aG adm $(whoami)`
 
+### Simplified Chinese Font Priority Fix
+
+Move SC to the top by:
+
+```
+$ sudoedit $(realpath /etc/fonts/conf.d/64-language-selector-prefer.conf)
+```
+
+Source: <https://askubuntu.com/questions/901486/%E9%97%A8-looks-weird-on-my-system-default-font>
+
 ## Legacy
 
 ### For old Ubuntu versions