为什么不使用 sshrc 中的 $PATH 设置? [英] Why is $PATH set in sshrc not used?

问题描述

我正在尝试在 OS X 服务器上通过 ssh 设置 svn.为此，我读到我需要一个包装器来设置 umask 并且 - 在我的情况下 - 设置存储库根目录.一种快速而肮脏的方法是重命名 /usr/bin/svnserve 并在该位置放置一个包装脚本.但是 SIP 可以保护该位置不受任何更改的影响，无论如何我更喜欢更简洁的解决方案.

I am trying to setup svn over ssh on an OS X server. In order to do so, I read that I need a wrapper to set umask and - in my case - to set the repository root. A quick and dirty way to do that is to rename /usr/bin/svnserve and place a wrapper script at that location. However SIP protects that location from any changes, and I would prefer a cleaner solution anyway.

所以我在 /usr/local/bin/svnserve 创建了一个包装脚本，并用

So I created a wrapper script at /usr/local/bin/svnserve and created /etc/ssh/sshrc with

PATH=/usr/local/bin:$PATH

我已经通过写入日志文件验证了在从我的客户端启动远程 ssh 命令时执行此文件.但是，修改后的 PATH 似乎没有传递到命令环境:

I have verified that this file gets executed when initiating a remote ssh command from my client by writing to a log file. However, the modified PATH does not seem to get passed to the command environment:

ssh hostname 'echo $PATH'
Password:
/usr/bin:/bin:/usr/sbin:/sbin

我是否忽略了什么?或者 /etc/ssh/sshrc 是设置路径的错误位置?如果是这样，正确的地方是什么?

Am I overlooking something? Or is /etc/ssh/sshrc the wrong place to set a path? If so, what's the right place?

我尝试过的其他地方:/etc/profile 和 /etc/bashrc，但这些似乎都没有与 ssh 命令一起执行.

Other places I've tried: /etc/profile and /etc/bashrc, but none of these seem to get executed in connection with an ssh command.

注意:这不是更改客户端行为的选项(例如，向命令添加所需的路径).

推荐答案

/etc/sshrc 与远程发出的命令不在同一个 shell 实例中运行，因此 PATH 更新不会持续通过.

/etc/sshrc does not run in the same shell instance with the remotely-issued command, so the PATH update does not persist through.

一些可用的选项:

• 您可以在服务器端设置AcceptEnv PATH，将其配置为接受远程系统发送的PATH，在客户端设置SendEnv PATH(在~/.ssh/config，或作为 ssh 的参数通过 -o 传递，或在 /etc/ssh/ssh_config 中).
• 在服务器上的/etc/ssh/sshd_config中，您可以将选项PermitUserEnvironment设置为yes；完成后，可以将变量和值添加到服务器上个人用户帐户中的 ~/.ssh/environment.
• 您可以使用 ForceCommand 覆盖远程请求的命令，或者使用类似 /usr/bin/env PATH=/usr/local/bin:/usr/bin:/binsvnserve 或简单的 /usr/local/bin/svnserve

• You can set AcceptEnv PATH on the server to configure it to accept a PATH sent by the remote system, and SendEnv PATH on the client (in ~/.ssh/config, or as an argument to ssh passed with -o, or in /etc/ssh/ssh_config).
• In /etc/ssh/sshd_config on the server, you can set the option PermitUserEnvironment to yes; with that done, the variable and value can be added to ~/.ssh/environment in the individual user's account on the server.
• You can use ForceCommand to override the remotely requested command, either with something like /usr/bin/env PATH=/usr/local/bin:/usr/bin:/bin svnserve or simply /usr/local/bin/svnserve

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