如何使用 cron 作业运行 python 文件 [英] How to run a python file using cron jobs

问题描述

我已经创建了一个 python 文件，例如 file_example.py

Hi I have created a python file for example as file_example.py

文件会输出sensex值

The file will output the sensex value

假设linux系统上文件的路径是/Desktop/downloads/file_example.py

Suppose the path of the file on linux system is /Desktop/downloads/file_example.py

我通常会像python file_example.py

但是我想设置一个 cron 作业来每 2 分钟运行一次位于上述路径的 python 文件

But I want to set a cron job to run the python file every 2 min which is located at the above path

谁能告诉我怎么做

编辑代码:

我编辑了代码并创建了一个名为 test.sh 的 bash 脚本，如下所示

I had edited the code and created a bash script with the name test.sh as indicated below

#!/bin/bash 
cd /Desktop/downloads/file_example.py
python file_example.py 2>log.txt 

运行上述文件时，显示如下错误:

When I run the above file, the following error is displayed:

sh-4.2$ python test.sh
  File "test.sh", line 3
    python test.py 2>log.txt 
              ^
SyntaxError: invalid syntax

推荐答案

假设您使用的是 unix 操作系统，您将执行以下操作.

Assuming you are using a unix OS, you would do the following.

使用命令编辑 crontab 文件

edit the crontab file using the command

crontab -e

添加类似于下面的一行

*/2 * * * * /Desktop/downloads/file_example.py

这可用于运行其他脚本，只需使用所需脚本的路径即可

this can be used to run other scripts simply use the path to the script needed i.e.

*/2 * * * * /path/to/script/to/run.sh

时间的解释如下(在数字前添加一个星号和斜线，每 n 个时间步运行一次，在这种情况下每 2 分钟)

An explanation of the timing is below (add a star and slash before number to run every n timesteps, in this case every 2 minutes)

* * * * * command to be executed
- - - - -
| | | | |
| | | | ----- Day of week (0 - 7) (Sunday=0 or 7)
| | | ------- Month (1 - 12)
| | --------- Day of month (1 - 31)
| ----------- Hour (0 - 23)
------------- Minute (0 - 59)

这篇关于如何使用 cron 作业运行 python 文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！