Add install script

.chezmoiignore

@@ -1 +1,2 @@
 to_install.txt
+install.sh

install.sh

@@ -0,0 +1,55 @@
+#!/bin/sh
+
+# FIXME inline install.sh here instead of using curl | sh
+# FIXME consider using packages to install chezmoi on deb and rpm-based systems
+
+set -e
+
+cd "${HOME}"
+
+is_command() {
+	type "${1}" >/dev/null 2>&1
+}
+
+if [ -n "${LOGNAME}" ]; then
+	username="${LOGNAME}"
+elif [ -n "${USER}" ]; then
+	username="${USER}"
+elif [ -n "${USERNAME}" ]; then
+	username="${USERNAME}"
+elif is_command whoami; then
+	username="$(whoami)"
+elif is_command logname; then
+	username="$(logname)"
+else
+	printf "unable to determine username" 1>&2
+	exit 1
+fi
+
+sudo=
+if [ "${username}" != "root" ]; then
+	sudo="sudo "
+fi
+
+chezmoi=chezmoi
+if is_command chezmoi; then
+	chezmoi --version
+elif is_command "${HOME}/.local/bin/chezmoi"; then
+	chezmoi="${HOME}/.local/bin/chezmoi"
+elif is_command "${HOME}/bin/chezmoi"; then
+	chezmoi="${HOME}/bin/chezmoi"
+elif is_command curl; then
+	sh -c "$(curl -fsSL get.chezmoi.io/lb)"
+	chezmoi="$HOME/.local/bin/chezmoi"
+elif is_command wget; then
+	sh -c "$(wget -qO- get.chezmoi.io/lb)"
+	chezmoi="$HOME/.local/bin/chezmoi"
+else
+	echo "unable to install chezmoi" 1>&2
+	exit 1
+fi
+
+${chezmoi} init --apply "git@git.jika.li:Jika/dotfiles.git"
+
+shell="$(awk -F : "\$1 == \"${username}\" { print \$7 }" /etc/passwd)"
+exec "${shell}"