如何在 Ubuntu 操作系统上每天使用 cron 作业运行 php 脚本

问题描述

要运行的命令我正在使用 ubuntu 12 和灯服务器.我想每 1 小时后运行一个 php 脚本.我已经创建了一个 crontab 来执行它，如果我使用命令 crontab -l 检查我的 cron 列表，它会显示如下

command to runI am using ubuntu 12 and lamp server . I want to run a php script after every 1 hour . i have create a crontab to execute this and if i check my cron list with command crontab -l it is showing like this

# Edit this file to introduce tasks to be run by cron.
0 * * * * /usr/bin/php5 -q /var/www/cronjobs/cron1.php

# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
# 
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').# 
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
# 
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
# 
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
# 
# For more information see the manual pages of crontab(5) and cron(8)
# 
# m h  dom mon dow   command

这是我的php脚本

0 * * * * /usr/bin/php5 -q /var/www/cronjobs/cron1.php

但它没有执行

我如何检查它为什么不起作用，请帮忙

how can i check why it is not working , please help

推荐答案

要找出您的 cron 有什么问题，您可以在终端中输入以下命令:

To find out what is wrong with your cron you can type the following command in your terminal:

grep -i "cron1.php" /var/log/syslog

系统日志包含所有 cron 日志.

The syslog contains all log of crons.

尝试在终端上运行代码 /usr/bin/php5 -q/var/www/cronjobs/cron1.php 以检查是否有错误.

Try run the code /usr/bin/php5 -q /var/www/cronjobs/cron1.php on terminal to check if there are errors.

您还可以将所有错误重定向到一个文件:

You can also redirect all errors to a file:

0 * * * * /usr/bin/php5 -q /var/www/cronjobs/cron1.php 2> /tmp/errorCron1.txt

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