How to write cron job in AWS EC2 server

Question

I've created a cron job in AWS EC2 but it is not working.

I followed below steps to create cron tab:

• Step 1: I logged in to AWS EC2 Instace
• step 2: crontab -e
• Step 3: Insert mode
• Step 4: I entered * * * * * php/var/www/html/welcome.php (To run every min.)
• Step 5: :wq

Cron tab is created but not running.

Please can you any one help me if is there any PHP script means please provide me. Do I need to give spaces between every star?

Answer 1

First of all, you need to put an space between php and /var :

From

* * * * * php/var/www/html/welcome.php

to

* * * * * php /var/www/html/welcome.php
             ^

Then, you'd better use /bin/php instead of just php . To determine where the php executable is located, type which php in your console, it will give you the file path. So it will become something like this:

* * * * * /bin/php /var/www/html/welcome.php
          ^^^^^^^^

More things:

• check if crontab is saved properly? Type crontab -l . Your new crontab line should be there.
• is the script exactly in this dir? Try ls -l /var/www/html/welcome.php .
• is the script executing if you do from console? Try /bin/php var/www/html/welcome.php to see if it is a script or crontab problem.
• does the script have executing mode? Try chmod 755 /var/www/html/welcome.php

Keep us updated so we can find what can be causing the error.

Answer 2

Running cron on EC2 is not any different from running on any *nix server - as far as I know. I would check of the system messages for any errors. You can also redirect stderr/stdout to a file as in

 * * * * * <your script>  >> /var/tmp/out.log 2>&1

and check for any issues for starters.

Answer 3

可能为时已晚，但如果您打算每分钟运行一次该命令应该是该命令

* * * * * php /var/www/html/welcome.php