add backup script

bin/.backupignore

@@ -0,0 +1,15 @@
+.Spotlight-*/
+.Trashes
+/afs/*
+/automount/*
+/cores/*
+/dev/*
+/Network/*
+/private/tmp/*
+/private/var/run/*
+/private/var/spool/postfix/*
+/private/var/vm/*
+/Previous Systems.localized
+/tmp/*
+/Volumes/*
+*/.Trash

bin/backup.sh

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+#!/usr/bin/env bash
+
+# Disc backup script
+# Requires rsync 3
+
+# Ask for the administrator password upfront
+sudo -v
+
+# IMPORTANT: Make sure you update the `DST` variable to match the name of the
+# destination backup drive
+
+DST="/Volumes/Macintosh HD/"
+SRC="/"
+EXCLUDE="$HOME/.dotfiles/bin/.backupignore"
+
+PROG=$0
+
+# --acls                   update the destination ACLs to be the same as the source ACLs
+# --archive                turn on archive mode (recursive copy + retain attributes)
+# --delete                 delete any files that have been deleted locally
+# --delete-excluded        delete any files (on DST) that are part of the list of excluded files
+# --exclude-from           reference a list of files to exclude
+# --hard-links             preserve hard-links
+# --one-file-system        don't cross device boundaries (ignore mounted volumes)
+# --sparse                 handle sparse files efficiently
+# --verbose                increase verbosity
+# --xattrs                 update the remote extended attributes to be the same as the local ones
+
+if [ ! -r "$SRC" ]; then
+    logger -t "$PROG" "Source $SRC not readable - Cannot start the sync process"
+    exit;
+fi
+
+if [ ! -w "$DST" ]; then
+    logger -t "$PROG" "Destination $DST not writeable - Cannot start the sync process"
+    exit;
+fi
+
+logger -t "$PROG" "Start rsync"
+
+sudo rsync --acls \
+           --archive \
+           --delete \
+           --delete-excluded \
+           --exclude-from="$EXCLUDE" \
+           --hard-links \
+           --one-file-system \
+           --sparse \
+           --verbose \
+           --xattrs \
+           "$SRC" "$DST"
+
+logger -t "$PROG" "End rsync"
+
+# Make the backup bootable
+sudo bless -folder "$DST"/System/Library/CoreServices
+
+# Update the backup's cache
+# sudo update_dyld_shared_cache -force -root "$DST"
+
+exit 0