交互式Python脚本可在远程服务器上运行命令

Question

I need to write a script to ssh to remote server and run some commands there. Can anyone suggest me any modules that will help me do this?

I tried to use pexpect. I was able to login to machine, provide password, but could not execute any unix commands. Is pexpect meant for this sort id usage?

command = 'ssh '+'uname@'+ vm

    ssh_newkey = 'Are you sure you want to continue connecting'
    # my ssh command line
    p=pexpect.spawn(command)

    i=p.expect([ssh_newkey,'password:',pexpect.EOF])
    if i==0:
        print "Say yes to prompt"
        p.sendline('yes')
        i=p.expect([ssh_newkey,'password:',pexpect.EOF])
    if i==1:
        print "I give password\n",
        p.sendline("abcd")
        p.sendline("pwd")
        p.expect('xyza')
        #p.sendline("//some unix command")

Everything until the last line is ok, but there onwards my script just exits.

Answer 1

If you want to do something relatively quick on a remote server fabric is probably the best thing to use for python. Fabric is written on top of paramiko and has some API level abstraction that makes it easier to use than paramiko.