使用 exec_command 检查 Windows 目录是否存在

Question

我正在使用 Python 2.7 和 Paramiko 2.1.2 检查运行 OpenSSH 的服务器上是否存在 Windows 目录。 Windows 目录存在于服务器上，但我的代码没有找到它。从我的测试来看，我似乎错误地指定了目录，但我无法弄清楚为什么这不起作用。虽然我没有展示它，但如果我使用“/”而不是“\”，我不会成功。有没有人知道如何解决这个问题，可能会发生什么？

更新 1：这在 Windows 系统上可以正常执行，

stdin, stdout, stderr = ssh.exec_command('cmd /c dir "D:\"')

但是，我仍然无法检查特定目录是否存在

更新 2：这似乎有效。

stdin, stdout, stderr = ssh.exec_command('if [[ -d /cygdrive/d/log ]]; then echo Exists; fi')

但是，我仍然对任何关于为什么跟随不起作用，或者说不能始终如一地起作用的解释感兴趣。

if_exist_path = "cmd /c if exist \"" + log_path + "\" echo Exists"
stdin, stdout, stderr = ssh.exec_command(if_exist_path)

考虑下面的代码。

import paramiko
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect("10.9.8.7", username="FakeUser", password="FakePassword")
log_path = "D:\\Log"
if_exist_path = "cmd /c if exist \"" + log_path + "\" echo Exists"
print("Var 'if_path_exist' is: {}".format(if_exist_path))
stdin, stdout, stderr = ssh.exec_command(if_exist_path)
stdoutput = stdout.readlines()
stderror = stderr.readlines()
print("First Stdout is {}".format(stdoutput))
print("First Stderr is {}".format(stderror))
print("")
stdin, stdout, stderr = ssh.exec_command('cmd /c dir "D:\\Log"')
stdoutput = stdout.read()
stderror = stderr.read()
print("Second Stdout is {}".format(stdoutput))
print("Second Stderr is {}".format(stderror))
print("")
stdin, stdout, stderr = ssh.exec_command('cmd /c dir "D:\"')
stdoutput = stdout.read()
stderror = stderr.read()
print("Third Stdout is {}".format(stdoutput))
print("Third Stderr is {}".format(stderror))
print("")
stdin, stdout, stderr = ssh.exec_command('cmd /c dir "D:\\"')
stdoutput = stdout.read()
stderror = stderr.read()
print("Fourth Stdout is {}".format(stdoutput))
print("Fourth Stderr is {}".format(stderror))
print("")
stdin, stdout, stderr = ssh.exec_command('cmd /c dir "D:\Log"')
stdoutput = stdout.read()
stderror = stderr.read()
print("Fifth Stdout is {}".format(stdoutput))
print("Fifth Stderr is {}".format(stderror))
print("")
stdin, stdout, stderr = ssh.exec_command('cmd /c dir "D:\Log\"')
stdoutput = stdout.read()
stderror = stderr.read()
print("Sixth Stdout is {}".format(stdoutput))
print("Sixth Stderr is {}".format(stderror))
print("")

输出：

C:\Scripts>SO_Test.py
Var 'if_path_exist' is: cmd /c if exist "D:\Log" echo Exists
First Stdout is []
First Stderr is []

Second Stdout is  Volume in drive D is Apps
 Volume Serial Number is xxxx-xxxx

 Directory of D:\


Second Stderr is File Not Found


Third Stdout is  Volume in drive D is Apps
 Volume Serial Number is xxxx-xxxx

 Directory of D:\

01/26/2017  10:49 PM    <DIR>          Log
01/12/2017  11:34 AM            12,887 Blah.ps1
01/12/2017  01:16 PM            12,082 result.txt
12/12/2016  03:39 PM            23,340 Blahv201.zip
04/15/2017  10:37 PM    <DIR>          Company
01/27/2017  08:19 PM    <DIR>          CompanyBackup
01/12/2017  01:08 PM            10,060 Untitled1.ps1
               4 File(s)         58,369 bytes
               3 Dir(s)  175,276,904,448 bytes free

Third Stderr is

Fourth Stdout is
Fourth Stderr is sh: -c: line 0: unexpected EOF while looking for matching `"'
sh: -c: line 1: syntax error: unexpected end of file

Fifth Stdout is  Volume in drive D is Apps
 Volume Serial Number is xxxx-xxxx

 Directory of D:\


Fifth Stderr is File Not Found

Sixth Stdout is  Volume in drive D is Apps
 Volume Serial Number is xxxx-xxxx

 Directory of D:\


Sixth Stderr is File Not Found

Answer 1

您正在寻找os.path.isdir，或os.path.exists 目录。

if os.path.isdir("/test/to/dir") == True:

    print('dir exists ')

    # you next actions