Я пытаюсь использовать rsync с subprocess.call. Как ни странно, он работает, если я передаю subprocess.call строку, но она не будет работать со списком (ala, Python doc).
вызов sp.call со строкой:
In [23]: sp.call("rsync -av content/ writings_raw/", shell=True)
sending incremental file list
sent 6236 bytes received 22 bytes 12516.00 bytes/sec
total size is 324710 speedup is 51.89
Out[23]: 0
вызов sp.call со списком:
In [24]: sp.call(["rsync", "-av", "content/", "writings_raw/"], shell=True)
rsync version 3.0.9 protocol version 30
Copyright (C) 1996-2011 by Andrew Tridgell, Wayne Davison, and others.
Web site: http://rsync.samba.org/
Capabilities:
64-bit files, 64-bit inums, 32-bit timestamps, 64-bit long ints,
socketpairs, hardlinks, symlinks, IPv6, batchfiles, inplace,
append, ACLs, xattrs, iconv, symtimes
rsync comes with ABSOLUTELY NO WARRANTY. This is free software, and you
are welcome to redistribute it under certain conditions. See the GNU
General Public Licence for details.
rsync is a file transfer program capable of efficient remote update
via a fast differencing algorithm.
Usage: rsync [OPTION]... SRC [SRC]... DEST
or rsync [OPTION]... SRC [SRC]... [[email protected]]HOST:DEST
or rsync [OPTION]... SRC [SRC]... [[email protected]]HOST::DEST
or rsync [OPTION]... SRC [SRC]... rsync://[[email protected]]HOST[:PORT]/DEST
or rsync [OPTION]... [[email protected]]HOST:SRC [DEST]
or rsync [OPTION]... [[email protected]]HOST::SRC [DEST]
or rsync [OPTION]... rsync://[[email protected]]HOST[:PORT]/SRC [DEST]
The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect
to an rsync daemon, and require SRC or DEST to start with a module name.
Options
-v, --verbose increase verbosity
-q, --quiet suppress non-error messages
--no-motd suppress daemon-mode MOTD (see manpage caveat)
... snipped....
repeated: --filter='- .rsync-filter'
--exclude=PATTERN exclude files matching PATTERN
--blocking-io use blocking I/O for the remote shell
-4, --ipv4 prefer IPv4
-6, --ipv6 prefer IPv6
--version print version number
(-h) --help show this help (-h is --help only if used alone)
...snipped ...
rsync error: syntax or usage error (code 1) at main.c(1438) [client=3.0.9]
Out[24]: 1
Что не так, как я пользуюсь списком? Как вы это исправите? Мне нужен список, потому что я хотел бы использовать переменные. Конечно, я мог бы использовать:
sp.call("rsync -av "+Orig+" "+Dest, shell=True)
Но я хотел бы понять, как подпроцесс понимает списки против строк.
с установкой shell = False
In [36]: sp.call(['rsync', '-av', ORIG, DEST], shell=False)
sending incremental file list
sent 6253 bytes received 23 bytes 12552.00 bytes/sec
total size is 324710 speedup is 51.74
Out[36]: 0
должен = False и строка
In [38]: sp.call("rsync -av"+" "+ORIG+" "+DEST, shell=False)
---------------------------------------------------------------------------
OSError Traceback (most recent call last)
<ipython-input-38-0d366d3ef8ce> in <module>()
----> 1 sp.call("rsync -av"+" "+ORIG+" "+DEST, shell=False)
/usr/lib/python2.7/subprocess.pyc in call(*popenargs, **kwargs)
491 retcode = call(["ls", "-l"])
492 """
--> 493 return Popen(*popenargs, **kwargs).wait()
494
495
/usr/lib/python2.7/subprocess.pyc in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags)
677 p2cread, p2cwrite,
678 c2pread, c2pwrite,
--> 679 errread, errwrite)
680
681 if mswindows:
/usr/lib/python2.7/subprocess.pyc in _execute_child(self, args, executable, preexec_fn, close_fds, cwd, env, universal_newlines, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite)
1257 if fd is not None:
1258 os.close(fd)
-> 1259 raise child_exception
1260
1261
OSError: [Errno 2] No such file or directory
