Add backup commands

README.md

@@ -2,3 +2,10 @@ This repository contains the basic setup for how I like to configure my command
 editor settings, and other odds and ends.  In order to get a new machine up and running, simply clone this repository
 onto the machine and run the included `install.sh` script.  It will check for missing software and install it, and it
 will install its own versions of various important configuration files (e.g., `.profile`, `.vimrc`, etc.).
+
+### Backups
+
+There are a number of commands in `bin` related to backing up your files to a remote drive. If you'd like to use them,
+start by running `backup-init.sh`.  It will ask you for various bits of information necessary to configure your backups.
+When its finished, you'll want to call `backup-run.sh` whenever you'd like to make a backup.  This command is written
+with running from `cron` in mind, and may be safely run that way.

bin/backup-commands.default.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# This script will automatically be invoked by the backup system from the target directory. Use whatever bash commands
+# you like to backup any files needed into the current directory. The following will grab everything from your home
+# directory which commonly includes data you may care about. If there are other things you want to save, be sure to
+# add them in.
+
+rsync -az --delete /Users/andrew/ ./Users/andrew \
+    --exclude .DS_Store \
+    --exclude .Trash \
+    --exclude .dropbox \
+    --exclude Dropbox \
+    --exclude Library \
+        --include Library/Application\ Support
+

bin/backup-init.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+BACKUP_COMMANDS="$HOME/.backup-commands.sh"
+BIN_DIR=$(dirname $0)
+
+read -p "Enter your backup drive host: "        HOST
+read -p "Enter your backup drive share: "       SHARE
+read -p "Enter your backup drive username: "    USERNAME
+read -p "Enter your backup drive password: " -s PASSWORD
+
+MASKED_PASSWORD=$(echo $PASSWORD | sed "s/./*/g")
+
+echo; read -p "Backup to afp://$USERNAME:$MASKED_PASSWORD@$HOST/$SHARE? (Y/n): " CONFIRM
+[[ "$CONFIRM" == "" ]] && CONFIRM="Y"
+CONFIRM=$(echo $CONFIRM | tr "a-z" "A-Z")
+if [[ "$CONFIRM" != "Y" ]]; then
+    echo "Aborting backup init."
+    exit 1
+fi
+
+security add-generic-password -a $USER -s backup-host     -w "$HOST"
+security add-generic-password -a $USER -s backup-share    -w "$SHARE"
+security add-generic-password -a $USER -s backup-username -w "$USERNAME"
+security add-generic-password -a $USER -s backup-password -w "$PASSWORD"
+
+cp $BIN_DIR/backup-commands.default.sh "$BACKUP_COMMANDS"
+chmod u+x "$BACKUP_COMMANDS"
+
+echo; echo ">>>> PLEASE READ THIS! <<<<"
+echo "The file '.backup-commands.sh' has been created in your home directory."
+echo "Please review it to be sure it covers everything you want to back up."
+read -p "(press enter to continue)"
+

bin/backup-mount.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+function die {
+    echo $*; exit 1
+}
+LOCAL_MOUNT="$HOME/.backup-drive"
+
+HOST=$(security find-generic-password -a $USER -s backup-host -w)
+SHARE=$(security find-generic-password -a $USER -s backup-share -w)
+USERNAME=$(security find-generic-password -a $USER -s backup-username -w)
+PASSWORD=$(security find-generic-password -a $USER -s backup-password -w)
+DRIVE="afp://$USERNAME:$PASSWORD@$HOST/$SHARE"
+
+if ! mount | grep -q "$HOME/$LOCAL_MOUNT"; then
+    if [[ -e "$LOCAL_MOUNT" ]]; then
+        rm -rf "$LOCAL_MOUNT" || die "Could not mount to $LOCAL_MOUNT"
+    fi
+    mkdir -p "$LOCAL_MOUNT"
+    mount -t afp "$DRIVE" "$LOCAL_MOUNT" || die "Could not mount from $DRIVE"
+fi
+

bin/backup-run.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+function die {
+    echo $*; exit 1
+}
+
+LOCAL_MOUNT="$HOME/.backup-drive"
+BACKUP_COMMANDS="$HOME/.backup-commands.sh"
+STARTED_DATE=$(date)
+
+[[ -x "$BACKUP_COMMANDS" ]] || die "Could not find $BACKUP_COMMANDS"
+    
+echo "Starting backup at $STARTED_DATE..."
+
+./backup-unmount.sh || die
+./backup-mount.sh || die
+[[ -d "$LOCAL_MOUNT" ]] || die "Could find $LOCAL_MOUNT"
+
+(
+    cd "$LOCAL_MOUNT"
+    echo "Started backing up at $STARTED_DATE" > backup.log
+    "$BACKUP_COMMANDS" >> backup.log 2>&1
+)
+
+if [[ "$?" != 0 ]]; then
+    echo "ERROR: Backup failed!"
+    head -n10 "$LOCAL_MOUNT/backup.log"
+    echo "..."
+    tail -n10 "$LOCAL_MOUNT/backup.log"
+fi
+
+./backup-unmount.sh || echo "WARNING: Could not unmount $LOCAL_MOUNT! Please check into this!"
+echo "Finished backing up at $(date)."
+

bin/backup-unmount.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+function die {
+    echo $*; exit 1
+}
+LOCAL_MOUNT="$HOME/.backup-drive"
+
+if mount | grep -q "$LOCAL_MOUNT"; then
+    umount "$LOCAL_MOUNT" || die "Could not unmount $LOCAL_MOUNT"
+fi
+[[ -e "$LOCAL_MOUNT" ]] && rm -r "$LOCAL_MOUNT"
+