在OS X中修改环境变量如PATH的正确方法是什么?

我看了谷歌一点,找到了三个不同的文件进行编辑:

/etc/paths ~ / . profile ~ / tcshrc

我甚至没有这些文件中的一些,我很确定.tcshrc是错误的,因为OS X现在使用bash。这些变量,特别是PATH,定义在哪里?

我运行的是OS X v10.5 (Leopard)。


当前回答

就像Matt Curtis给出的答案一样,我通过launchctl设置环境变量,但我将它包装在一个名为export的函数中,因此每当我像在.bash_profile中一样导出一个变量时,它也由launchctl设置。我是这样做的:

My .bash_profile consists solely of one line, (This is just personal preference.) source .bashrc My .bashrc has this: function export() { builtin export "$@" if [[ ${#@} -eq 1 && "${@//[^=]/}" ]] then launchctl setenv "${@%%=*}" "${@#*=}" elif [[ ! "${@//[^ ]/}" ]] then launchctl setenv "${@}" "${!@}" fi } export -f export The above will overload the Bash builtin "export" and will export everything normally (you'll notice I export "export" with it!), then properly set them for OS X app environments via launchctl, whether you use any of the following: export LC_CTYPE=en_US.UTF-8 # ~$ launchctl getenv LC_CTYPE # en_US.UTF-8 PATH="/usr/local/bin:${PATH}" PATH="/usr/local/opt/coreutils/libexec/gnubin:${PATH}" export PATH # ~$ launchctl getenv PATH # /usr/local/opt/coreutils/libexec/gnubin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin export CXX_FLAGS="-mmacosx-version-min=10.9" # ~$ launchctl getenv CXX_FLAGS # -mmacosx-version-min=10.9 This way I don't have to send every variable to launchctl every time, and I can just have my .bash_profile / .bashrc set up the way I want. Open a terminal window, check out your environment variables you're interested in with launchctl getenv myVar, change something in your .bash_profile/.bashrc, close the terminal window and re-open it, check the variable again with launchctl, and voilá, it's changed. Again, like the other solutions for the post-Mountain Lion world, for any new environment variables to be available for apps, you need to launch or re-launch them after the change.

其他回答

嗯,我不确定/etc/paths和~/. macosx /environment。plist文件。那些是新的。

但是使用Bash时,您应该知道每次新的shell调用都会执行.bashrc 并且.bash_profile只在启动时执行一次。

我不知道在Mac OS x上这种情况发生的频率有多高。我想随着windows系统启动一切,这种区别已经消失了。

就我个人而言,我通过创建一个.bashrc文件来消除困惑,其中包含我需要的所有内容,然后执行:

ln -s .bashrc .bash_profile

虽然这里的答案并不是“错误的”,但我还要补充一点:永远不要在OS X中改变影响“所有进程”的环境变量,甚至在shell之外,也不要影响给定用户交互运行的所有进程。

In my experience, global changes to environment variables like PATH for all processes are even more likely to break things on OS X than on Windows. Reason being, lots of OS X applications and other software (including, perhaps especially, components of the OS itself) rely on UNIX command-line tools under the hood, and assume the behavior of the versions of these tools provided with the system, and don't necessarily use absolute paths when doing so (similar comments apply to dynamically-loaded libraries and DYLD_* environment variables). Consider, for instance, that the highest-rated answers to various Stack Overflow questions about replacing OS X-supplied versions of interpreters like Python and Ruby generally say "don't do this."

OS X is really no different than other UNIX-like operating systems (e.g., Linux, FreeBSD, and Solaris) in this respect; the most likely reason Apple doesn't provide an easy way to do this is because it breaks things. To the extent Windows isn't as prone to these problems, it's due to two things: (1) Windows software doesn't tend to rely on command-line tools to the extent that UNIX software does, and (2) Microsoft has had such an extensive history of both "DLL hell" and security problems caused by changes that affect all processes that they've changed the behavior of dynamic loading in newer Windows versions to limit the impact of "global" configuration options like PATH.

不管“蹩脚”与否,如果您将这些更改限制在较小的范围内,您将拥有一个更加稳定的系统。

来自单一来源的命令行和GUI应用程序的解决方案(适用于Mac OS X v10.10 (Yosemite)和Mac OS X v10.11 (El Capitan))

让我们假设在~/中有环境变量定义。Bash_profile如下所示:

export JAVA_HOME="$(/usr/libexec/java_home -v 1.8)"
export GOPATH="$HOME/go"
export PATH="$PATH:/usr/local/opt/go/libexec/bin:$GOPATH/bin"
export PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
export MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"

我们需要一个启动代理,它将在每次登录时运行,并随时按需将这些变量加载到用户会话。我们还需要一个shell脚本来解析这些定义并构建由代理执行的必要命令。

在~/Library/LaunchAgents/目录下创建一个后缀为plist的文件(例如osx-env-sync.plist),内容如下:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>osx-env-sync</string>
  <key>ProgramArguments</key>
  <array>
    <string>bash</string>
    <string>-l</string>
    <string>-c</string>
    <string>
      $HOME/.osx-env-sync.sh
    </string>
  </array>
  <key>RunAtLoad</key>
  <true/>
</dict>
</plist>

-l参数在这里很重要;使用登录shell执行shell脚本是必要的,以便~/。Bash_profile是在执行脚本之前首先获取的。

现在,shell脚本。在~/.osx-env-sync.sh中创建以下内容:

grep export $HOME/.bash_profile | while IFS=' =' read ignoreexport envvar ignorevalue; do
  launchctl setenv "${envvar}" "${!envvar}"
done

确保shell脚本是可执行的:

chmod +x ~/.osx-env-sync.sh

现在,加载当前会话的启动代理:

launchctl load ~/Library/LaunchAgents/osx-env-sync.plist

(重新)启动一个GUI应用程序并验证它可以读取环境变量。

设置是持久的。它将在重新启动和重新登录后仍然有效。

在初始设置之后(您刚刚完成了),如果您想在~/中反映任何更改。Bash_profile再次到您的整个环境,重新运行launchctl load…命令不会执行你想要的;相反,你会得到如下警告:

< $ HOME > /图书馆/ LaunchAgents / osx-env-sync。plist:操作已经在进行中

为了在不退出/登录的情况下重新加载环境变量,请执行以下操作:

launchctl unload ~/Library/LaunchAgents/osx-env-sync.plist
launchctl load ~/Library/LaunchAgents/osx-env-sync.plist

最后,确保重新启动已经运行的应用程序(包括Terminal.app),让它们知道这些更改。

我还将这里的代码和解释推送到GitHub项目:osx-env-sync。

我希望这将是最终的解决方案,至少对于最新版本的OS X (Yosemite & El Capitan)来说是这样。

任何Bash启动文件—~/。bashrc,(~ /。bash_profile、~ / . profile。还有一些奇怪的文件,名为~/. macosx /environment。用于GUI应用程序中的环境变量。

这里有一个非常简单的方法来做你想做的事情。在我的例子中,它是让Gradle工作(Android Studio)。

打开终端。 执行如下命令: Sudo nano /etc/paths或Sudo vim /etc/paths 在提示时输入密码。 转到文件底部,输入要添加的路径。 点击Control + X退出。 输入“Y”保存修改后的缓冲区。 打开一个新的终端窗口,然后输入: 回声路径美元

您应该看到新路径被追加到path的末尾。

我从这篇文章中得到了这些细节:

添加到Mac OS X 10.8 Mountain Lion及以上版本的PATH中