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樹莓派制作NAS過程詳見http://www.cnblogs.com/xiaowuyi/p/4051238.html。
Bypy是一個百度雲/百度網盤的Python客戶端，主要的目的就是在Linux環境下（命令行）同步百度雲盤空間。Bypy要求python2.7以上版本，最新版下載地址為https://github.com/houtianze/bypy
一、bypy安裝
1、所需環境
python 2.7x
python requests庫（安裝該庫需要setuptools 和pip）
2、安裝
（1）python 2.7 不在詳述
（2）requests庫安裝
首先安裝setuptools
wget https://bootstrap.pypa.io/ez_setup.py -O - | python
如果安裝過程中出現問題，可能是沒有安裝zip解壓的原因，zip如何安裝請百度。
然后安裝pip
https://pypi.python.org/pypi/pip 從這里下載pip－1.5.6.tar.gz
tar -zxvf pip-1.5.6.tar.gz
python setup.py install
安裝完成后，pip install requests。實現requests的安裝。
（3）安裝bypy
直接從https://github.com/houtianze/bypy下載解壓就可以了。
3、使用
（1）第一次使用
要把系統的區域編碼設置為UTF-8
vi /etc/sysconfig/i18n
將原內容改為：
LANG="zh_CN.UTF-8"
SYSFONT=latarcyrheb-sun16
設置token：
./bypy.py info
程序會要求你訪問一個網址，獲取你授權碼，授權后復制code給程序，程序會利用不同的服務器進行認證，認證成功會顯示百度網盤的容量，如果一次沒成功，可以多試幾次，容易被牆。
這時百度網盤的“我的應用管理”下會形成bypy文件＋。
安裝完全后，可以使用./bypy.py list 來看一下列表。
（2）主要命令參數
optional arguments:
-h, --help show this help message and exit
--TESTRUN Perform python doctest [default: False]
--PROFILE Profile the code [default: False]
-V, --version show program's version number and exit
-d, --debug enable debugging & logging [default: 0]
-v, --verbose set verbosity level [default: 0]
-r RETRY, --retry RETRY
number of retry attempts on network error [default: 5
times]
-q QUIT, --quit-when-fail QUIT
quit when maximum number of retry failed [default:
False]
-t TIMEOUT, --timeout TIMEOUT
network timeout in seconds [default: 60]
-s SLICE, --slice SLICE
size of file upload slice (can use '1024', '2k',
'3MB', etc) [default: 20 MB]
--chunk CHUNK size of file download chunk (can use '1024', '2k',
'3MB', etc) [default: 20 MB]
-e, --verify Verify upload / download [default : False]
-f, --force-hash force file MD5 / CRC32 calculation instead of using
cached values [default: False]
-l LISTFILE, --list-file LISTFILE
input list file (used by some of the commands only
[default: None]
--resume-download RESUMEDL
resume instead of restarting when downloading if local
file already exists [default: True]
--include-regex INCREGEX
regular expression of files to include. if not
specified (default), everything is included. for
download, the regex applies to the remote files; for
upload, the regex applies to the local files. to
exclude files, think about your regex, some tips here:
https://stackoverflow.com/questions/406230/regular-
expression-to-match-string-not-containing-a-word
[default: ]
--on-dup ONDUP what to do when the same file / folder exists in the
destination: 'overwrite', 'skip', 'prompt' [default:
overwrite]
--no-symlink DON'T follow symbol links when uploading / syncing up
[default: True]
--disable-ssl-check DON'T verify host SSL cerificate [default: True]
-c, --clean 1: clean settings (remove the token file) 2: clean
settings and hash cache [default: 0]
Commands:
help command - provide some information for the command
cleancache - remove invalid entries from hash cache file
combine <remotefile> [md5s] [localfile] - try to create a file at PCS by combining slices, having MD5s specified
compare [remotedir] [localdir] - compare the remote direcotry with the local directory
copy/cp <from> <to> - copy a file / dir remotely at Baidu Yun
delete/remove/rm <remotepath> - delete a file / dir remotely at Baidu Yun
downdir <remotedir> [localdir] - download a remote directory (recursively)
downfile <remotefile> [localpath] - download a remote file.
dumpcache - display file hash cache
list/ls [remotepath] [format] [sort] [order] - list the 'remotepath' directory at Baidu PCS
listrecycle [start] [limit] - list the recycle contents
meta <remotepath> [format] - get information of the given path (dir / file) at Baidu Yun.
mkdir <remotedir> - create a directory at Baidu Yun
move/mv/rename/ren <from> <to> - move a file / dir remotely at Baidu Yun
quota/info - displays the quota information
refreshtoken - refresh the access token
restore <remotepath> - restore a file from the recycle bin
search <keyword> [remotepath] [recursive] - search for a file using keyword at Baidu Yun
stream <remotefile> <localpipe> [format] [chunk] - stream a video / audio file converted to M3U format at cloud side, to a pipe.
syncdown [remotedir] [localdir] [deletelocal] - sync down from the remote direcotry to the local directory
syncup [localdir] [remotedir] [deleteremote] - sync up from the local direcotry to the remote directory
upload [localpath] [remotepath] [ondup] - upload a file or directory (recursively)