configs/daily-use-pcs/setup-git.bash

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#!/usr/bin/env bash
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# Exit if there's an error
set -e
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# Modify constants as needed
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GITEA_URL="https://git.askiiart.net"
NAME="askiiart"
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EMAIL="dev@askiiart.net"
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# Note: This waits until enter is pressed
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# read -p "Press Enter to continue" < /dev/tty
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if [ $(whoami) == "root" ]; then
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echo "Run as a normal user, not root"
exit 1
fi
command_exists() { type "$1" &>/dev/null; }
if command_exists "apt-get"; then
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sudo apt-get install pass git -y
elif command_exists "yum"; then
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sudo yum install pass git -y
elif command_exists "pacman"; then
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sudo pacman -S git --noconfirm
sudo pacman -S pass --noconfirm
elif command_exists "zypp"; then
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sudo zypper install pass git -y
elif command_exists "emerge"; then
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sudo echo Not yet supported, exiting...
elif command_exists "apk"; then
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sudo apk add pass
sudo apk add git
else
echo "Unsupported: unknown package manager and distro"
fi
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# Check if GCM is installed
if [ -d "${HOME}/git-credential-manager" ]; then
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echo "Git Credential Manager already installed, skipping..."
else
# Install git credential manager
curl -L https://aka.ms/gcm/linux-install-source.sh | sh
git-credential-manager configure
rm dotnet-install.sh
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fi
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############################################
# Do GPG key stuff for commit verification #
############################################
if [ -d "${HOME}/.gnupg/" ]; then
echo "GPG key(s) already exist, skipping..."
else
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# Create GPG key
echo "> $ gpg --full-generate-key"
echo
echo Use the defaults, then real name "askiiart", email address \"dev@askiiart.net\", and comment \"git key\"\n
echo
gpg --full-generate-key
read -p "Copy the long ID above, then paste it here: " KEY_ID
echo $KEY_ID
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# Export GPG key
gpg --armor --export $KEY_ID
echo This is the exported key, copy it and put it in GitHub/Gitea/whatever
echo Gitea URL: ${GITEA_URL}/user/settings/keys
echo GitHub URL: https://github.com/settings/gpg/new
read -p "Press enter when you're done" </dev/tty
pass init ${KEY_ID}
fi
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echo Doing git config stuff...
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git config --global credential.credentialStore gpg
git config --global user.name "${NAME}"
git config --global user.email "${EMAIL}"
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#############
# SSH stuff #
#############
# Get SSH key
if [ -d "${HOME}/.ssh" ]; then
echo "SSH keys already exist, skipping..."
else
# Generate SSH keys
echo
# -f: file, -N: passphrase, -t: type
ssh-keygen -f ~/.ssh/id_rsa -N "" -t rsa
echo
cat ~/.ssh/id_rsa.pub
echo This is the SSH public key, copy it and put it in GitHub/Gitea/whatever
echo Gitea URL: ${GITEA_URL}/user/settings/keys
echo GitHub URL: https://github.com/settings/ssh/new
fi
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# From https://superuser.com/a/954639
# Archived at https://web.archive.org/web/20230606153856/https://superuser.com/a/954639
echo Fixing .gnupg/ permissions
# Set ownership to your own user and primary group
chown -R "$USER:$(id -gn)" ~/.gnupg
# Set permissions to read, write, execute for only yourself, no others
chmod 700 ~/.gnupg
# Set permissions to read, write for only yourself, no others
chmod 600 ~/.gnupg/*
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read -p "Done. Now verify your SSH and GPG keys in Git*" </dev/tty