How to set cron in linux server?

Question

Hi i have created a birthday notification. My Cron URL is http://dev.raddyx.in/bday/birthday.php

I want to set cron run in every 24 hour but i am unable to run in the Linux server.

Check my command:-

50  10  *   *   *   curl -s -o /dev/null http://dev.raddyx.in/bday/birthday.php

Please help me how to set cron in Linux server?

Where did you enter this? Did you edit your crontab file? What happens or doesn't happen, are you getting any errors? — Pekka, Dec 10 '13 at 05:23
i don't know where is showing error. i am not sure crontab is running or not — Chinmay235, Dec 10 '13 at 05:26
how did you set this one? Through cpanel or through terminal? If you terminal access. type crontab -e in that terminal and see what is in there — Sabari, Dec 10 '13 at 05:29
@Chinmay at what time you want cron to be run? at midnight every day ? — Sabari, Dec 10 '13 at 05:29
I suggest to write a shell script e.g. `birthday.sh` which uses `logger` (to log messages) and then do the `curl` command, and run that `birthday.sh` script from your `crontab` entry. — Basile Starynkevitch, Dec 10 '13 at 06:01
What command will be in birthday.sh? Please suggest me i am totally unknown in linux. — Chinmay235, Dec 10 '13 at 06:04

score 1 · Answer 1 · answered Dec 10 '13 at 05:29

1

Are you entering this in /etc/crontab? If so, then you will also need to specify the user that the command is to run as, in the sixth field:

50  10  *   *   *  root curl -s -o /dev/null http://dev.raddyx.in/bday/birthday.php

You may want to look in /var/log/cron for some leads on the problem.

answered Dec 10 '13 at 05:29

billyw

I am unable to find `/var/log/cron` – Chinmay235 Dec 10 '13 at 05:34
@Chinmay Which Linux distribution are you running? – billyw Dec 10 '13 at 05:38
I don't know which distribution. Can you say me ho to know the distribution? – Chinmay235 Dec 10 '13 at 05:51
I usually find out with either `cat /proc/version` or `uname -a`. Also, if you're concerned about whether the cron daemon is running or not (I would be surprised if it isn't), then check if `ps aux | grep [c]rond` returns info on the process. – billyw Dec 10 '13 at 05:57

score 0 · Answer 2 · answered Dec 10 '13 at 05:36

0

Check the CURL is available or not otherwise you can use wget to execute the request

This will execute every 10:50. You can try this also

50 10 * * * /usr/bin/wget -O- http://dev.raddyx.in/bday/birthday.php >> /dev/null

This will dump your errors into this cronerror.txt file

59 10 * * *  /usr/bin/wget -q /var/www/<your log folder path>/cronerror.txt http://dev.raddyx.in/bday/birthday.php

answered Dec 10 '13 at 05:36

Sundar

This working for me in past two years. May be your wget installation path is in different place for more refernce http://linux.about.com/od/commands/l/blcmdl1_wget.htm – Sundar Dec 10 '13 at 05:49
http://linux.about.com/od/commands/l/blcmdl1_wget.htm use only wget instead of /usr/bin/wget use like 50 10 * * * wget error_path httppath – Sundar Dec 10 '13 at 05:50
how to know wget installation path? – Chinmay235 Dec 10 '13 at 05:58
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/42833/discussion-between-chinmay-and-sundar) – Chinmay235 Dec 10 '13 at 06:00

2 Answers2