This shell script is used for adding SSH and GPG keys to newly created WSL (Ubuntu) distribution.

wsl.sh

#!/usr/bin/env bash

# Sensitive informations
FULLNAME='Name Surname' # Enter your fullname.
EMAIL='name.surname@example.com' # Enter your email.
GITHUB_TOKEN='xxxxx' # Enter your Github token. It can be obtained here: https://github.com/settings/tokens. You need to define the "admin:gpg_key" and "admin:public_key" scopes.
GPG_PASSPHRASE="xxxxx" # Enter GPG passphrase.

# Configure Git
git config --global user.name "$FULLNAME"
git config --global user.email $EMAIL

# Calling the Github API
call_github_api() {
   curl --location --request POST "$1" \
   --header 'Accept: application/vnd.github.v3+json' \
   --header "Authorization: token ${GITHUB_TOKEN}" \
   --header 'Content-Type: application/json' \
   --data-raw "$2"
}

# Adding a SSH key
add_ssh_key() {
   SSH_KEY_LOCATION=$HOME/.ssh/id_github
   PUB_KEY=${SSH_KEY_LOCATION}.pub
   
   # Generating a new SSH key
   ssh-keygen -t rsa -b 4096 -C $EMAIL -N '' -C 'WSL Key' -f $SSH_KEY_LOCATION

   # Add current SSH key to Github
   SSH_REQUEST_BODY='{ "title": "WSL", "key": "'$(<$PUB_KEY)'"}'
   call_github_api 'https://api.github.com/user/keys' "$SSH_REQUEST_BODY"
}

# Adding a GPG key
add_gpg_key() {
   # Preparing a batch file for the GPG key generation
   echo "Key-Type: default
      Key-Length: 4096
      Subkey-Type: default
      Subkey-Length: 4096
      Name-Real: $FULLNAME
      Name-Email: $EMAIL
      Expire-Date: 0
      Passphrase: $GPG_PASSPHRASE" > ~/genkey

   # Generating a GPG key
   gpg --full-generate-key --batch ~/genkey
   rm ~/genkey

   # Extracting GPG key ID
   GPG_KEY_ID=$(gpg --list-secret-keys --keyid-format LONG $EMAIL | awk '/sec/{if (length($2) > 0) print $2}');
   PARSED_GPG_KEY_ID="${GPG_KEY_ID##*/}"

   # GPG public key files
   PUB_KEY_FILE=$HOME/$PARSED_GPG_KEY_ID.pub
   PUB_KEY_MIN_FILE=$HOME/$PARSED_GPG_KEY_ID.min.pub

   # Exporting the GPG public key to file
   gpg --output "$PUB_KEY_FILE" --armor --export $PARSED_GPG_KEY_ID
   sed -E ':a;N;$!ba;s/\r{0,1}\n/\\n/g' $PUB_KEY_FILE > $PUB_KEY_MIN_FILE

   # Adding a new GPG key to your GitHub account
   GPG_SSH_REQUEST_BODY='{ "armored_public_key" : "'$(<$PUB_KEY_MIN_FILE)'"}'
   call_github_api 'https://api.github.com/user/gpg_keys' "$GPG_SSH_REQUEST_BODY"
   rm $PUB_KEY_FILE $PUB_KEY_MIN_FILE

   # Telling Git about your GPG key
   git config --global commit.gpgsign true
   git config --global user.signingkey $PARSED_GPG_KEY_ID

   # Adding GPG key to bash profile
   test -r ~/.bash_profile && echo 'export GPG_TTY=$(tty)' >> ~/.bash_profile
   echo 'export GPG_TTY=$(tty)' >> ~/.profile
}

# Set SSH agent to start on login
set_ssh_to_autostart() {
   echo "SSH_ENV=\"\$HOME/.ssh/agent-environment\"

function add_keys {
   for possiblekey in \${HOME}/.ssh/id_*; do
      if grep -q PRIVATE \"\$possiblekey\"; then
         /usr/bin/ssh-add \"\$possiblekey\"
      fi
   done
}

function start_agent {
   echo \"Initialising new SSH agent...\"
   /usr/bin/ssh-agent | sed 's/^echo/#echo/' > \"\${SSH_ENV}\"
   echo succeeded
   chmod 600 \"\${SSH_ENV}\"
   . \"\${SSH_ENV}\" > /dev/null
   add_keys;
}

# Source SSH settings, if applicable

if [ -f \"\${SSH_ENV}\" ]; then
   . \"\${SSH_ENV}\" > /dev/null
   #ps \${SSH_AGENT_PID} doesn't work under cywgin
   ps -ef | grep \${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
      start_agent;
   }
else
   start_agent;
fi"
} > $HOME/.bash_profile

# Add SSH key
add_ssh_key

# Add GPG key
add_gpg_key

# Autostart SSH agent
set_ssh_to_autostart

Additional settings

1. Install socat in WSL distro.
2. Add "terminal.integrated.shellArgs.linux": ["-l"] and "terminal.integrated.fontFamily": "Source Code Pro for Powerline" configurations to VS Code