为什么我的Perl脚本在由cron运行时加载模块？ [英] Why can't my Perl script load a module when run by cron?

问题描述

我有一堆Perl脚本，它们都运行良好，但需要使用Plibdata; 向上。

我设置了一个运行的cron作业（我收到来自root的确认电子邮件），并返回以下错误消息：

 无法在@INC中找到Plibdata.pm（@INC包含：/ install / lib /opt/perl58/lib/5.8.8/IA64.ARCHREV_0-thread-multi /opt/perl58/lib/5.8.8 /opt/perl58/lib/site_perl/5.8.8/IA64.ARCHREV_0-thread-multi /opt/perl58/lib/site_perl/5.8.8 / opt / perl58 / lib / site_perl。）在./x第5行。
 
 BEGIN失败 - 编译在./x第5行中止。
  

5 is ... you guessed it .... use Plibdata;

我也试图设置环境：

 使用lib$ ENV {CARSPATH} / install / lib 
  

所以也许如果我找到这个plibdata的位置， p>

我的cron命令将使用 / usr / bin / sh 执行crontabs ...

有任何建议吗？

此脚本可以从命令行运行。

解决方案

从其他人建议的包装脚本运行程序可能是我的首选方法，但可能有一些其他解决方案：

如果你使用现代cron，你可以在你的crontab条目中做这样的事情：

  * * * * CARSPATH = / opt / carsi x 
  

以适当的时间表指示符替换星号。 >

这将为x进程设置CARSPATH，并允许使用通过环境变量的lib语句。

也可以根据您的shell和cron实现，将您的环境设置存储在一个文件中，并执行以下操作：

  * * * * source specialenv.sh&& x 
  

其中specialenv.sh包含（如bash）行

  export CARSPATH = / opt / carsi 
  

您也可以直接在crontab中设置环境变量，如果您选择这样做。

I have a bunch of Perl scripts that all run fine, yet need to have use Plibdata; up top.

I set up a cron job that runs (I get the confirmation email from root) and it spits back the following error message:

Can't locate Plibdata.pm in @INC (@INC contains: /install/lib /opt/perl58/lib/5.8.8/IA64.ARCHREV_0-thread-multi /opt/perl58/lib/5.8.8 /opt/perl58/lib/site_perl/5.8.8/IA64.ARCHREV_0-thread-multi /opt/perl58/lib/site_perl/5.8.8 /opt/perl58/lib/site_perl .) at ./x line 5.

BEGIN failed--compilation aborted at ./x line 5.

Line 5 is... you guessed it.... use Plibdata;

I am also attempting to set the environment as such:

use lib "$ENV{CARSPATH}/install/lib";

so maybe if I found the location of this plibdata, I could explicitly direct it that way?

My cron commands will be executed using /usr/bin/sh says crontabs...

Any suggestions?

This script works from the command line.

解决方案

Running your program from a wrapper script as others have suggested is probably my preferred method, but there may be a few other solutions:

If you're using a modern cron you may be able to do something like this in your crontab entry:

* * * * * CARSPATH=/opt/carsi x

replacing the asterisks with the appropriate schedule designators.

This will set CARSPATH for the x process and allow the use lib statement that passes the environment variable to work.

You can also, depending on your shell and cron implementation, store your environment setup in a file and do something like:

* * * * * source specialenv.sh && x

Where specialenv.sh contains lines like (for bash)

export CARSPATH=/opt/carsi

You may also be able to set environment variables directly in the crontab, should you choose to do so.

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