[英]How to run a Ruby script using rbenv with cron
I'm trying to run a Ruby script using rbenv with cron.我正在尝试使用 rbenv 和 cron 运行 Ruby 脚本。 I know that I need to load rbenv in order to have the right Ruby version loaded.
我知道我需要加载 rbenv 才能加载正确的 Ruby 版本。
I've tried options like this:我试过这样的选项:
*/10 * * * * /bin/bash -c 'source $HOME/.bashrc;
*/10 * * * * /bin/bash -c 'source $HOME/.bashrc; cd /data/app;
cd /数据/应用程序; ruby -v' >> /tmp/logfile.txt 2>&1
ruby -v' >> /tmp/logfile.txt 2>&1
but as the session is not interactive, I'm not having the right Ruby version.但由于会话不是交互式的,我没有正确的 Ruby 版本。 I've found example like this:
我找到了这样的例子:
15 14 1 * * export BASH_ENV=/path/to/environment && /full/path/to/bash -c '/full/path/to/rvm_script.rb'
15 14 1 * * export BASH_ENV=/path/to/environment && /full/path/to/bash -c '/full/path/to/rvm_script.rb'
It didn't work neither.它也不起作用。 Then I wrote a loader, which only load rbenv in the current shell but it doesn't work.
然后我写了一个加载器,它只在当前shell中加载rbenv但它不起作用。
*/1 * * * * /bin/bash -c '$HOME/.rbenv/loader.sh ;
*/1 * * * * /bin/bash -c '$HOME/.rbenv/loader.sh ; cd /data/app/;
cd /数据/应用程序/; ruby -v ' >> /tmp/logfile.txt 2>&1
ruby -v ' >> /tmp/logfile.txt 2>&1
Now I'm searching for another way to load it ... any ideas?现在我正在寻找另一种加载方式......有什么想法吗?
I've found a solution to load rbenv.我找到了加载 rbenv 的解决方案。 Either with a loader importing rbenv to the PATH :
使用加载器将 rbenv 导入到 PATH :
*/1 * * * * /bin/bash -c '.
*/1 * * * * /bin/bash -c '. $HOME/.rbenv/loader.sh ;
$HOME/.rbenv/loader.sh ; cd /data/app/;
cd /数据/应用程序/; ruby -v'
红宝石 -v'
The '.'这 '。' before '$HOME/.rbenv/loader.sh' is important, it runs the script in the current shell
在 '$HOME/.rbenv/loader.sh' 很重要之前,它会在当前 shell 中运行脚本
Or without loader, which is better :或者没有装载机,哪个更好:
*/1 * * * * /bin/bash -c 'export PATH="$HOME/.rbenv/bin:$PATH" ;
*/1 * * * * /bin/bash -c 'export PATH="$HOME/.rbenv/bin:$PATH" ; eval "$(rbenv init -)";
eval "$(rbenv init -)"; cd /data/app/;
cd /数据/应用程序/; ruby -v'
红宝石 -v'
A better solution is to simply use the command bash -lc
command.更好的解决方案是简单地使用命令
bash -lc
命令。 This will read your bash profile file, which would setup rbenv.这将读取您的 bash 配置文件,该文件将设置 rbenv。 From the
bash
man page:从
bash
手册页:
-l Make bash act as if it had been invoked as a login shell
-l 使 bash 就像作为登录 shell 被调用一样
When bash is invoked as an interactive login shell, or as a non-interactive shell with the --login option, it first reads and executes commands from the file /etc/profile, if that file exists.
当 bash 作为交互式登录 shell 或作为带有 --login 选项的非交互式 shell 调用时,它首先从文件 /etc/profile 读取并执行命令(如果该文件存在)。 After reading that file, it looks for ~/.bash_profile, ~/.bash_login, and ~/.profile, in that order, and reads and executes commands from the first one that exists and is readable.
读取该文件后,它会按顺序查找 ~/.bash_profile、~/.bash_login 和 ~/.profile,并从第一个存在且可读的命令中读取和执行命令。 The --noprofile option may be used when the shell is started to inhibit this behavior.
当 shell 启动时可以使用 --noprofile 选项来禁止这种行为。
Even though kmmndr's answer is correct, I also like the bash -l
-approach.尽管 kmmndr 的答案是正确的,但我也喜欢
bash -l
-approach。
Opening a non-interactive login shell keeps things simpler and since my Rails applications and Ruby scripts all run under the same user, overhead is not a problem.打开非交互式登录 shell 让事情变得更简单,因为我的 Rails 应用程序和 Ruby 脚本都在同一用户下运行,所以开销不是问题。
So instead of所以代替
*/1 * * * * /bin/bash -c 'export PATH="$HOME/.rbenv/bin:$PATH" ; eval "$(rbenv init -)"; cd /data/app/; ruby -v'
I do我愿意
*/1 * * * * /bin/bash -lc 'cd /data/app/; ruby -v'
As noted in the above answer, bash -l
will act as if you login normally, which means that your rbenv environment will already be set up (as long as you have the appropriate lines in your .bashrc
, .bash_profile
of /etc/profile.d/*
).正如上面的回答所指出的,
bash -l
行为就像你正常登录一样,这意味着你的 rbenv 环境已经设置好了(只要你的.bashrc
、 .bash_profile
of /etc/profile.d/*
有适当的行/etc/profile.d/*
)。
If you need more detail, I wrote a blog post about this topic.如果您需要更多详细信息,我写了一篇关于此主题的博客文章。
For my backup script in Ruby I simply use ~/.rbenv/bin/rbenv exec ruby [options] /path/to/ruby/script.rb
.对于我在 Ruby 中的备份脚本,我只需使用
~/.rbenv/bin/rbenv exec ruby [options] /path/to/ruby/script.rb
。 Try this:尝试这个:
* * * * * ~/.rbenv/bin/rbenv exec ruby -v > ~/rbenv-ruby-version.txt
@Kelvin 的这个答案对我有用:
*/1 * * * * PATH=$HOME/.rbenv/bin:$HOME/.rbenv/shims:$PATH ruby -v >> ~/test.out
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