任意のディレクトリをrsyncで同期バックアップするシェルスクリプト

backup.sh

#!/bin/bash

function find-mount-point {
  mount | grep $1 | awk '{print $3}'
}

function check-mount {
  a=$(find-mount-point $1)
  if [ "$a" = "" ]; then
    b=/Volumes/$(basename $1)
    if [ -e $b ]; then
      echo "error: $b already exists"
      exit 1
    fi
    mkdir $b
    mount -t smbfs smb:$1 $b
    a=$(find-mount-point $1)
    if [ "$a" = "" ]; then
      echo "error: $1 not found"
      exit 1
    fi
  fi
  echo $a
}

function backup {
  a=$(find-mount-point $2)
  b=$(check-mount $2)
  c="/usr/local/bin/rsync -aPv --delete --exclude .DS_Store --delete-excluded $1 $b/$3"
  echo $c
  $c
  [ "$a" = "" ] && umount $b
}

function backup-here {
  a=$(cd $(dirname $0); pwd)
  backup $a/ $1 $(basename $a)
}

## ~/Documents/Scans/ を //kei@oz/home の Scans にバックアップする
# backup ~/Documents/Scans/ //kei@oz/home Scans

## シェルスクリプトが存在するディレクトリをバックアップする
backup-here //kei@oz/home