我有两个用户在Fedora：
@H_301_1@(i)Wani
(ii)根(很明显！) @H_301_1@我的用户Wani的.bashrc的内容是：
(ii)根(很明显！) @H_301_1@我的用户Wani的.bashrc的内容是：
# .bashrc
echo "Hello"
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
# User specific aliases and functions
@H_301_1@现在登录到root后，我键入以下命令：
[root@Dell Wani]#touch try.txt [root@Dell Wani]#service sshd start [root@Dell Wani]#scp try.txt Wani@localhost:~/ Wani@localhost's password: Hello [root@Dell Wani]#@H_301_1@现在我登录到Wani，然后键入：
[Wani@Dell ~]$ cat try.txt cat: try.txt: No such file or directory [Wani@Dell ~]$@H_301_1@现在我再次登录到root并使用-v键入相同的命令：
[root@Dell Wani]# scp -v morph.log Wani@localhost: Executing: program /usr/bin/ssh host localhost,user Wani,command scp -v -t -- . OpenSSH_5.6p1,OpenSSL 1.0.0j-fips 10 May 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to localhost [127.0.0.1] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Remote protocol version 2.0,remote software version OpenSSH_5.6 debug1: match: OpenSSH_5.6 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.6 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 'localhost' is known and matches the RSA host key. debug1: Found key in /root/.ssh/known_hosts:2 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi- with-mic,password debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information Credentials cache file '/tmp/krb5cc_0' not found debug1: Unspecified GSS failure. Minor code may provide more information Credentials cache file '/tmp/krb5cc_0' not found debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information debug1: Next authentication method: publickey debug1: Trying private key: /root/.ssh/id_rsa debug1: Trying private key: /root/.ssh/id_dsa debug1: Next authentication method: password Wani@localhost's password: debug1: Authentication succeeded (password). Authenticated to localhost ([127.0.0.1]:22). debug1: channel 0: new [client-session] debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env XMODIFIERS = @im=none debug1: Sending env LANG = en_US.UTF-8 debug1: Sending command: scp -v -t -- . Hello [root@Dell Wani]# 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 Transferred: sent 1664,received 1976 bytes,in 0.1 seconds Bytes per second: sent 22961.5,received 27266.8 debug1: Exit status 0@H_301_1@(然后按Enter键)
[root@Dell Wani]#@H_301_1@任何人都可以告诉我们这里发生了什么？为什么文件不能从根目录复制到Wani？
在.bashrc中使用echo会破坏scp，因为scp希望在stdin / stdout通道上看到它的协议数据。有关此问题的更多讨论，请参阅
https://bugzilla.redhat.com/show_bug.cgi?id=20527。
@H_301_1@有几个可用的解决方法：
@H_301_1@>条件在“交互式”标志(例如案件$ – 在* i *由三人建议)
>使用tty实用程序来检测交互式shell(例如，如果tty> / dev / null或if [-t 0])
>检查$ SSH_TTY的值 @H_301_1@我想你应该使用任何一个为你工作。我不知道什么是最好的(最便携/最可靠)选项，不幸的是。
原文链接：https://www.f2er.com/bash/391319.html>使用tty实用程序来检测交互式shell(例如，如果tty> / dev / null或if [-t 0])
>检查$ SSH_TTY的值 @H_301_1@我想你应该使用任何一个为你工作。我不知道什么是最好的(最便携/最可靠)选项，不幸的是。
