New root creation scripts

1 files changed, 49 insertions, 0 deletions

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+#!/bin/bash
+# Copyleft 2012 - Nicolás Reynolds <fauno@parabola.nu>
+# Bootstraps a Parabola root, useful for base systems, build chroots, etc.
+# Note: this is a very basic script that let's you do whatever you want, so
+# it's not foolproof ;)
+
+# Attempt to provide some help
+if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+    echo "Installs a Parabola root on the current dir"
+    echo "Usage: newroot [custom package1 ...]"
+    echo ""
+    echo "Environment variables:"
+    echo -e "WORKDIR \tThe install dir"
+    echo -e "LOGFILE \tAn alternate logfile ($PWD/pacman.log)"
+    echo -e "PACCACHE\tThe pacman cache (guessed)"
+    exit
+fi
+
+# Fail at any error
+set -E
+
+if [ ! -w / ]; then echo "Run as root."; exit 1; fi
+
+# Should work unless you have a messy pacman.conf
+function find_cache() {
+    grep "CacheDir\s*=\s*" /etc/pacman.conf | tail -n1 | cut -d"=" -f2 | tr -d " "
+}
+
+# Build on the current dir or WORKDIR env var
+WORKDIR="${WORKDIR:-${PWD}}"
+LOGFILE="${LOGFILE:-${WORKDIR}/pacman.log}"
+PACCACHE="${PACCACHE:-$(find_cache)}"
+# Do a last attempt to have a pacman cache
+PACCACHE="${PACCACHE:-/var/cache/pacman/pkg}"
+
+export WORKDIR LOGFILE PACCACHE
+
+function pacman() {
+    pacman -r "${WORKDIR}" \
+           --logfile "${LOGFILE}" \
+           --noconfirm \
+           --cachedir "${PACCACHE}" \
+           --config /etc/pacman.conf $@
+}
+
+# Bootstrap!
+mkdir -p "${WORKDIR}"/var/lib/pacman
+
+pacman -Sy base ${@}