写在前面

前面借助 exiv2 和 exiftool 做照片视频做了归档，是时候把需要的信息存起来了。
考虑到数据的安全性、读写的便利性，决定用 SQLite（Synology 内置）。
注： Synology 还内置了 Redis、PostGreSQL。

建库

文件系统，只有文件全路径是唯一，其它信息均读出来方便日后查：

CREATE TABLE if not exists FileInfo (
    FullPath NVARCHAR(100) PRIMARY KEY NOT NULL,
    FileMd5 NCHAR(33) NOT NULL,
    FileType CHARACTER(9),
    FileSize INT NOT NULL,
    CreateTime DATETIME,
    UpdateTime DATETIME
);
CREATE INDEX if not exists FullPath ON FileInfo (FullPath);
CREATE INDEX if not exists CreateTime ON FileInfo (CreateTime);
CREATE INDEX if not exists FileType ON FileInfo (FileType);
CREATE INDEX if not exists FileMd5 ON FileInfo (FileMd5);

增删改查总得调试几把：

sqlite3 ~admin/www/Tmission/FileInfo.db 'select count(FullPath) from FileInfo where FullPath like "%王阳明故居%";'

输出 Excel 也挺方便：

sqlite3 -header -csv ~admin/www/Tmission/FileInfo.db "select FullPath,datetime(CreateTime,'unixepoch','localtime') from FileInfo where FullPath like '%国剧少年行%' limit 3"
# FullPath,"datetime(CreateTime,'unixepoch','localtime')"
# "/volume1/homes/higkoo/Drive/Backup/国剧少年行/20190109-134140.JPG","2019-01-09 13:41:40"
# "/volume1/homes/higkoo/Drive/Backup/国剧少年行/20190109-125415.JPG","2019-01-09 12:54:15"
# "/volume1/homes/higkoo/Drive/Backup/国剧少年行/20190109-112352.JPG","2019-01-09 11:23:52"

导出csv格式的Excel文件

归档

全盘扫描，并存入必要的信息：

#!/bin/bash
sDir="${1:-/volume1/homes/higkoo/Drive/Backup/}" # 扫描目录
iDB="${2:-/volume1/homes/admin/www/Tmission/FileInfo.db}" # SQLite3数据库
readonly debug=true # 调试开关
readonly eLog="${iDB%%/*}Error.log" # 数据库目录同级存错误日志
find "${sDir}" ! -path "*@eaDir*" -type f | while read sPath; do
   unset fMd5 cTime fSize fExt uTime
   fExt="${sPath##*.}" 
   fMd5=`md5sum "${sPath}"` && fMd5="${fMd5%% *}"
   cTime=`exiftool -d %s -DateTimeOriginal -S -s "${sPath}"`
   fSize=`stat --printf=%s "${sPath}"`
   uTime=`date +%s`
   $debug && declare -p sPath fExt fSize fMd5 cTime uTime
   if [[ ! -z $fMd5 && ! -z "$sPath" && ! -z $fSize ]]; then
       eMd5=`sqlite3 "${iDB}" "select FileMd5 from FileInfo where FullPath='${sPath:-NULL}'" 2>>"${eLog}"`
       if [[ -z "$eMd5" ]]; then
           sqlite3 "${iDB}" "INSERT INTO FileInfo (FileMd5,FullPath,FileSize,FileType,CreateTime,UpdateTime) VALUES ('$fMd5','$sPath','$fSize','$fExt','$cTime','$uTime');" 2>>"${eLog}"
           [[ $? -eq 0 ]] && echo -ne '+' || echo -ne '#'
       else
           if [[ "$eMd5" == "$fMd5" ]]; then
               echo -ne '_' 
           else
               sqlite3 "${iDB}" "UPDATE FileInfo SET (FileMd5,FileSize,FileType,CreateTime,UpdateTime) VALUES ('$eMd5','$fSize','$fExt','$cTime','$uTime') where FullPath='${sPath:-NULL}';" 2>>"${eLog}"
               [[ $? -eq 0 ]] && echo -ne '-' || echo -ne '*'
           fi
       fi
   else
       echo "$(date +%F\ %T),${sPath}" >>"${eLog}"
       echo -ne '.'
   fi
   $debug && exit 0
done