为什么在这种情况下 SCP 会写入 0 字节?

为什么在这种情况下 SCP 会写入 0 字节?

我正在尝试将我的 ssh 密钥从我的本地虚拟机复制到另一个盒子,一切似乎都正常,但是当我检查远程盒子时,文件不在那里......

Transferred: stdin 0, stdout 0, stderr 0 bytes in 0.0 seconds

scp 看起来没有写任何东西,但我不知道为什么!

我想可能是因为内部网络没有暴露,也许它无法通过 scp 与远程盒子通信,但它似乎正在进行一些握手...当我通过 scp 连接到网络中的一个盒子时,它工作正常 =/

为什么 scp 在这里不起作用?

我已经检查过远程盒子上的权限看起来没问题......

没有错误消息...

scp -v 输出

[user] > scp -v my.key.pub [email protected]:.ssh/
Executing: program /usr/bin/ssh host domain.net, user www, command scp -v -t .ssh/
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to domain.net [xxx.xxx.xxx.xxx] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: loaded 3 keys
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1p1 Debian-5
debug1: match: OpenSSH_5.1p1 Debian-5 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.3
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'domain.net' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:11
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/identity
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Next authentication method: password
[user] > [email protected]'s password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
debug1: Sending command: scp -v -t .ssh/
Bash Src is loaded!


debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: channel 0: free: client-session, nchannels 1
debug1: fd 0 clearing O_NONBLOCK
debug1: fd 1 clearing O_NONBLOCK
debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 0.0 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
debug1: Exit status 0

答案1

详细输出中的“Bash Src is loaded!”是什么意思?它来自你的 ~/.bashrc,不是吗?让它消失。

基本上,它与此相同:Rsync 似乎与 .bashrc 不兼容(导致“你的 shell 干净吗?”)但使用 scp 而不是 rsync。

嘿,常见问题解答中甚至还有一个条目:https://www.complang.tuwien.ac.at/doc/openssh-server/faq.html#2.9

答案2

如果你无法转账任何文件,这可能是由于您的 .bashrc(或等效文件)在非交互式登录(即 rsync、scp 等)期间做了不该做的事情;在过去的糟糕日子里,'stty' 因造成此类问题而臭名昭著。请参阅http://theory.uwinnipeg.ca/localfiles/infofiles/bash/bashref_54.html有关如何检查你的 shell 是否是交互式的的一些提示。

答案3

我在应用 ssh 选项时遇到过这个问题RequestTTY force。例如,在我的情况下,我忘记了在我的 中启用了该选项~/.ssh/config

在这种情况下,添加-o RequestTTY=no命令scp将解决该问题。

请参阅以下答案以了解更多信息:https://unix.stackexchange.com/questions/278284/why-does-scp-fail-when-requesttty-force-option-is-enabled

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