Question

我试图从Python程序中调用ssh，但似乎忽略了这些参数。

这是Python程序：

#!/usr/bin/python

from subprocess import Popen, PIPE, call

vm_name = 'vmName with-space'
vm_host = 'user@192.168.21.230'

def ssh_prefix_list(host=None):
    if host:
        # return ["ssh", "-v", "-v", "-v", host]
        return ["scripts/ssh_wrapper", "-v", "-v", "-v", host]
    else:
        return []

def start(vm_name, vm_host=None):  # vm_host defaults to None
    print "vm_host = ", vm_host
    vbm_args = ssh_prefix_list(vm_host) + ["VBoxManage", "startvm", vm_name]
    print vbm_args
    return call(vbm_args, shell=True)

start(vm_name, vm_host)

包装器打印参数的数量，它们的值，并调用ssh。

#!/bin/bash

echo Number of arguments: $#
echo ssh arguments: "$@"
ssh "$@"

这是输出。

$ scripts/vm_test.py
vm_host =  stephen@192.168.21.230
['scripts/ssh_wrapper', '-v', '-v', '-v', 'stephen@192.168.21.230', 'VBoxManage', 'startvm', 'atp-systest Clone']
Number of arguments: 0
ssh arguments:
usage: ssh [-1246AaCfgKkMNnqsTtVvXxY] [-b bind_address] [-c cipher_spec]
           [-D [bind_address:]port] [-e escape_char] [-F configfile]
           [-i identity_file] [-L [bind_address:]port:host:hostport]
           [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]
           [-R [bind_address:]port:host:hostport] [-S ctl_path]
           [-w local_tun[:remote_tun]] [user@]hostname [command]

这是在Python 2.5上。

Answer 1

将call与shell=True一起使用时，需要传递单个字符串，而不是字符串数组。所以：

call("scripts/ssh_wrapper -v -v -v "+host+" VBoxManage startvm "+vmname)

call（）中忽略的参数

1 个答案: