diff --git a/dev/core.sh b/dev/core.sh
new file mode 100644
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--- /dev/null
+++ b/dev/core.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+#
+# Sources:
+# https://gist.github.com/artizirk/d09ce3570021b0f65469cb450bee5e29
+# https://gist.github.com/greeflas/431bc50c23532eee8a7d6c1d603f3921
+#
+
+echo "==> Add identity from keyserver.ubuntu.com"
+
+gpg --keyserver keyserver.ubuntu.com --recv-keys A355308DA385BEF5
+
+echo "==> Install YubiKey Manager"
+
+sudo apt install -y yubikey-manager
+
+ykman openpgp
+
+sudo apt install -y gnupg pcscd scdaemon
+
+mkdir -p ~/.gnupg
+cat > ~/.gnupg/scdaemon.conf <<'EOF'
+disable-ccid
+pcsc-driver /usr/lib/x86_64-linux-gnu/libpcsclite.so.1
+card-timeout 1
+
+# Always try to use yubikey as the first reader
+# even when other smart card readers are connected
+# Name of the reader can be found using the pcsc_scan command
+# If you have problems with gpg not recognizing the Yubikey
+# then make sure that the string here matches exacly pcsc_scan
+# command output. Also check journalctl -f for errors.
+reader-port Yubico YubiKey
+EOF
+
+cat > ~/.gnupg/gpg.conf <<'EOF'
+trust-model tofu+pgp
+EOF
+
+systemctl --user restart gpg-agent.service
+
+gpg --card-status
+
+echo "==> Setup YubiKey"
+
+mkdir -p ~/.config/autostart
+mkdir -p ~/.config/environment.d
+
+cat > ~/.config/autostart/gnome-keyring-ssh.desktop <<'EOF'
+[Desktop Entry]
+Name=GNOME Keyring SSH Agent
+Exec=/usr/bin/gnome-keyring-daemon --start --components=ssh
+Type=Application
+X-GNOME-Autostart-enabled=true
+Hidden=true
+EOF
+
+cat >> ~/.profile <<'EOF'
+export SSH_AUTH_SOCK=${XDG_RUNTIME_DIR}/gnupg/S.gpg-agent.ssh
+EOF
+
+echo "==> Setup Git"
+
+sudo apt install -y git
+
+wget https://github.com/envoyr.keys -O ~/.ssh/envoyr.pub
+
+git config --global user.name "Maurice Preuß"
+git config --global user.email hello@envoyr.com
+git config --global gpg.format ssh
+git config --global user.signingkey ~/.ssh/envoyr.pub
+
+echo "Done! Please reboot..."
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