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YubiKey 4 series GPG and SSH setup guide

Written for fairly adept technical users, preferably of Debian GNU/Linux, not for absolute beginners.

You'll probably be working with a single smartcard, so you'll want only one primary key (1. Sign & Certify) and two associated subkeys (2. Encrypt, 3. Authenticate). I've published a Bash function which automates this slightly special key generation process.

Password-store keeps your passwords (or any other sensitive information) saved in GnuPG encrypted files organized in ~/.password-store. For more information about GPG, consult the GNU Privacy Handbook.

Getting started

To get started, install pass and generate a keypair.

$ brew install pass
$ gpg --gen-key
$ gpg --list-keys

	# Run the last command as root
	sudo !!
	# Serve current directory tree at http://$HOSTNAME:8000/
	python -m SimpleHTTPServer
	# Save a file you edited in vim without the needed permissions
	:w !sudo tee %
	# change to the previous working directory
	cd -
	# Runs previous command but replacing
	^foo^bar

	task dependencyReport {
	doLast {
	def file = new File("project-dependencies.dot")
	file.delete()
	file << "digraph {\n"
	file << "splines=ortho\n"
	rootProject.childProjects.each { item ->
	def from = item.value
	from.configurations.compile.dependencies
	.matching { it in ProjectDependency }

	# Create a new file in your home directory called .gtkrc-eclipse

	# call eclipse with this command:
	# Gtk2 forced:
	# export SWT_GTK3=0
	# env GTK2_RC_FILES=/usr/share/themes/<YourTheme>/gtk-2.0/gtkrc:/home/<YourUser>/.gtkrc-eclipse '/path_to_eclipse/eclipse'

	# In your Eclipse directory find the file 'e4_default_gtk.css'
	# In this file there's a CSS class: