python - Python Pexpect SSH命令行登录参数

Question

我正在使用pexpect.py脚本登录并获取主机名信息。
基本上我是这样运行的

~$:./pexpect.py -h{hostname} -u{user} -p{password}

您将在下面看到，它是自动运行一些命令并关闭的。我希望能够在最后添加行，以便用户可以选择想要查看的信息。因此，代替上面的命令行，它看起来像:

~$:./pexpexct.py -h{hostname} -u{username} -p{password} -x{user defined} -z{user defined}

基本上，-x是..表示正常运行时间，而-z是ifconfig ...的列表也将包含-a，-b和-c。我不知道如何在代码中添加这些参数:

#!/usr/bin/env python
# -h : hostname of the remote server to login to.
# -u : username to user for login.
# -p : Password to user for login. 

import os, sys, time, re, getopt, getpass
import traceback
import pexpect

COMMAND_PROMPT = '[#$] '
TERMINAL_PROMPT = '(?i)terminal type\?'
TERMINAL_TYPE = 'vt100'

SSH_NEWKEY = '(?i)are you sure you want to continue connecting'

def exit_with_usage():
    print globals()['__doc__']
    os._exit(1)

def main():
    global COMMAND_PROMPT, TERMINAL_PROMPT, TERMINAL_TYPE, SSH_NEWKEY
    ## Parse the options, arguments, get ready, etc.
    try:
        optlist, args = getopt.getopt(sys.argv[1:], 'h:u:p:', ['help','?'])
    except Exception, e:
        print str(e)
        exit_with_usage()
    options = dict(optlist)
    if len(args) > 1:
        exit_with_usage()

    if [elem for elem in options if elem in ['-?','--?','--help']]:
        print "Help:"
        exit_with_usage()

    if '-h' in options:
        host = options['-h']
    else:
        host = raw_input('hostname: ')
    if '-u' in options:
        user = options['-u']
    else:
        user = raw_input('username: ')
    if '-p' in options:
        password = options['-p']
    else:
        password = getpass.getpass('password: ')

## Login via SSH

    child = pexpect.spawn('ssh -l %s %s'%(user, host))
    i = child.expect([pexpect.TIMEOUT, SSH_NEWKEY, COMMAND_PROMPT, '(?i)password'])
    if i == 0:
            print 'ERROR! could not login with SSH. Here is what SSH said:'
            print child.before, child.after
            print str(child)
            sys.exit (1)
    if i == 1: # In this case SSH does not have the public key cached.
            child.sendline ('yes')
            child.expect ('(?i)password')
    if i == 2:
            # This may happen if a public key was setup to automatically login.
            # But beware, the COMMAND_PROMPT at this point is very trivial and
            # could be fooled by some output in the MOTD or login message.
            pass
    if i == 3:
            child.sendline(password)
            # Now we are either at the command prompt or
            # the login process is asking for our terminal type.
            i = child.expect ([COMMAND_PROMPT, TERMINAL_PROMPT])
            if i == 1:
                child.sendline (TERMINAL_TYPE)
                child.expect (COMMAND_PROMPT)

        COMMAND_PROMPT = "\[PEXPECT\]\$ "
        child.sendline ("PS1='[PEXPECT]\$ '") # In case of sh-style
        i = child.expect ([pexpect.TIMEOUT, COMMAND_PROMPT], timeout=10)
        if i == 0:
            print "# Couldn't set sh-style prompt -- trying csh-style."
            child.sendline ("set prompt='[PEXPECT]\$ '")
            i = child.expect ([pexpect.TIMEOUT, COMMAND_PROMPT], timeout=10)
            if i == 0:
                print "Failed to set command prompt using sh or csh style."
                print "Response was:"
                print child.before
                sys.exit (1)

# Now we should be at the command prompt and ready to run some commands.
# print '---------------------------------------'
# print 'Report of commands run on remote host.'
# print '---------------------------------------'

# Run uname.
        child.sendline ('uname -a')
        child.expect (COMMAND_PROMPT)
        print child.before
        if 'linux' in child.before.lower():
            LINUX_MODE = 1
        else:
            LINUX_MODE = 0

# Run and parse 'uptime'.
        child.sendline ('uptime')
        child.expect('up\s+(.*?),\s+([0-9]+) users?,\s+load averages?: ([0-9]+\.[0-9][0-9]),?\s+([0-9]+\.[0-9][0-9]),?\s+([0-9]+\.[0-9][0-9])')
    duration, users, av1, av5, av15 = child.match.groups()
        days = '0'
        hours = '0'
        mins = '0'
        if 'day' in duration:
            child.match = re.search('([0-9]+)\s+day',duration)
            days = str(int(child.match.group(1)))
        if ':' in duration:
            child.match = re.search('([0-9]+):([0-9]+)',duration)
            hours = str(int(child.match.group(1)))
            mins = str(int(child.match.group(2)))
        if 'min' in duration:
            child.match = re.search('([0-9]+)\s+min',duration)
            mins = str(int(child.match.group(1)))
        print
        print 'Uptime: %s days, %s users, %s (1 min), %s (5 min), %s (15 min)' % (
            duration, users, av1, av5, av15)
        child.expect (COMMAND_PROMPT)

# Run Current Date.
        child.sendline ('date')
        child.expect (COMMAND_PROMPT)
        print child.before

# Run vmstat.
    #    child.sendline ('vmstat')
    #    child.expect (COMMAND_PROMPT)
    #    print child.before

# Run free.
    #    if LINUX_MODE:
    #        child.sendline ('free') # Linux systems only.
    #        child.expect (COMMAND_PROMPT)
    #        print child.before

# Run df.
    #    child.sendline ('df')
    #    child.expect (COMMAND_PROMPT)
    #    print child.before

# Run lsof.
    #    child.sendline ('lsof')
    #    child.expect (COMMAND_PROMPT)
    #    print child.before

# Run netstat
    #    child.sendline ('netstat')
    #    child.expect (COMMAND_PROMPT)
    #    print child.before

# Run MySQL show status.
    #    child.sendline ('mysql -p -e "SHOW STATUS;"')
    #    child.expect (PASSWORD_PROMPT_MYSQL)
    #    child.sendline (password_mysql)
    #    child.expect (COMMAND_PROMPT)
    #    print
    #    print child.before

# Now exit the remote host.
        child.sendline ('exit')
        index = child.expect([pexpect.EOF, "(?i)there are stopped jobs"])
        if index==1:
            child.sendline("exit")
            child.expect(EOF)

    if __name__ == "__main__":

        try:
            main()
        except Exception, e:
            print str(e)
            traceback.print_exc()
            os._exit(1)

Answer 1

在此行中，您具有使用的选项(粗体)
optlist，args = getopt.getopt(sys.argv [1:]，' h:u:p:'，['help'，'？'])

为运行时间添加-x，您可以执行以下操作:
optlist，args = getopt.getopt(sys.argv [1:]，' h:u:p:x '，['help'，'？'])

然后在部分中进行正常运行时间检查，只是将其放在下面，如果是这样的话:
如果选项中为“-x”:

并针对每个选项重复此操作，不要忘记在其上添加一些说明