ssh-copy-id for windows

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本文介绍在Windows环境下实现SSH公钥认证的方法，包括使用Python脚本和Shell命令两种方式。涉及cmder环境配置及常见问题解决。

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准备环境：cmder环境运行

1. python方式

参考：https://segmentfault.com/a/1190000016489772

执行命令样式：python copy_id_for_windows.py root@echo.dell

存在问题：需要输入两次密码，无法直接在cmder下运行，msysgit环境下未验证。

"""ssh-copy-id for Windows.

Example usage: python ssh-copy-id.py ceilfors@my-remote-machine

This script is dependent on msysgit by default as it requires scp and ssh.
For convenience you can also try that comes http://bliker.github.io/cmder/.
"""

import argparse, os
from subprocess import call

def winToPosix(win):
    """Converts the specified windows path as a POSIX path in msysgit.

    Example:
    win: C:\\home\\user
    posix: /c/home/user
    """
    posix = win.replace('\\', '/')
    return "/" + posix.replace(':', '', 1)

parser = argparse.ArgumentParser()
parser.add_argument("-i", "--identity_file", help="identity file, default to ~\\.ssh\\idrsa.pub", default=os.environ['HOME']+"\\.ssh\\id_rsa.pub")
parser.add_argument("-d", "--dry", help="run in the dry run mode and display the running commands.", action="store_true")
parser.add_argument("remote", metavar="user@machine")
args = parser.parse_args()

local_key = winToPosix(args.identity_file)
remote_key = "~/temp_id_rsa.pub"

# Copy the public key over to the remote temporarily
scp_command = "scp {} {}:{}".format(local_key, args.remote, remote_key)
print(scp_command)
if not args.dry:
    call(scp_command)

# Append the temporary copied public key to authorized_key file and then remove the temporary public key
ssh_command = ("ssh {} "
                 "mkdir ~/.ssh;"
                 "touch ~/.ssh/authorized_keys;"
                 "cat {} >> ~/.ssh/authorized_keys;"
                 "rm {};").format(args.remote, remote_key, remote_key)
print(ssh_command)
if not args.dry:
    call(ssh_command)

2. shell方式

参考：http://www.voidcn.com/article/p-ssegbhrp-btv.html

问题：提示文件*/id_rsa.pub不存在。应该是cmder的问题

ID_FILE=C:\Users\Administrator\.ssh\id_rsa.pub
#ID_FILE="/C/Users/Administrator/.ssh/id_rsa.pub"
GET_ID="cat ${ID_FILE}"
{ eval "$GET_ID" ; } | ssh ${1%:} "umask 077; test -d .ssh || mkdir .ssh ; cat >> .ssh/authorized_keys" || exit 1