Questions tagged [cronjob]
The cronjob tag has no usage guidance.
89
questions
81
votes
4
answers
219k
views
How to run a cron job as a specific user?
I would like to run a cron job as a specific user on my machine. How may I specify the user for a cron job to run as?.
The cron jobs will be running on a server (running on Ubuntu 10.0.4). The 'users'...
57
votes
2
answers
62k
views
Difference between /etc/crontab and "crontab -e"
What is the difference between the crontab located in /etc/crontab and the crontab that can be edited using crontab -e?
29
votes
2
answers
24k
views
Where to store cronjob script?
I'd prefer to not keep it in my /home/myusername directory. Is there a best practice of where to store your shell scripts for cronjobs? At the root level?
I'm running ubuntu server 12.04 right now.
16
votes
2
answers
6k
views
Can I specify a specific time with seconds with Linux crontab?
49 18 * * * mpv ~/Musik/Donau.mp3
This command would play the Donau.mp3 file at exactly 6:49pm. How could I, for example, specify 6:49:50pm?
11
votes
5
answers
30k
views
Timezone issue with cron
My cron jobs are computed one hour later compared to server time. I don't understand what is going on.
My configuration is the following :
Server time :
Europe/Paris
In /etc/default/cron I added ...
10
votes
3
answers
55k
views
cron expression for every hour starting from specific time
Every one hour (starting from "now") I am able to schedule using this cron expression (expression) using nodejs cron-job.
But I need to set cron every one hour starting from a specific time. For ...
9
votes
3
answers
8k
views
Only email on cron errors for jobs in cron.daily, cron.hourly, etc
I have several cron jobs that run (in /etc/cron.daily, /etc/cron.hourly, /etc/cron.weekly, etc.) and email root@localhost with the results. I'd like to stop those emails if the jobs are succeeding, ...
7
votes
2
answers
4k
views
Can Ubuntu play a video via cron job?
I'm developing a display system for a paint shop.
I've set up a computer with Ubuntu to run the video and display it on a TV, running a PHP script that should update the video every hour via the ...
4
votes
2
answers
43k
views
How to create a cron job to upload files to an FTP server
I would like to create a cron job that uploads files from a directory on my computer to my FTP server. I would like it to do it daily at midnight. I know pretty much nothing about cron, so I ...
4
votes
2
answers
69k
views
rsync cron job with a password?
I want to set up an rsync command as a cron job, so I need to find a way to supply my server password automatically to rsync.
Currently I have a shell script that looks like this:
#!/bin/sh
rsync *....
4
votes
3
answers
5k
views
Stop Cron job for a particular time interval
I have a cron job which runs every five minutes all day long.
I want to stop this cron job running on Sundays between 4pm and 5pm - it should start again after this time.
How can I script this?
3
votes
1
answer
2k
views
crontabs hour specification */1 is that the same as *
I am looking for clarification with the cron tab that I am working with.
some job 1 * * * *
some job 1 */1 * * *
Are those jobs the same? The job will run the first minute every ...
3
votes
2
answers
644
views
Execute a cronjob once a day, when machine is on, but not necessarily at a specific time
I want to run a cronjob once every day on a machine that doesn't run all the time, but runs at least once a day for a couple of hours. The problem with a cronjob is, that I have to give it the exact ...
3
votes
2
answers
6k
views
Help with running crontab from root
I'm using Mac OS X and having trouble getting a cron job to run. I type the following:
$ sudo -i
$ crontab -e
I then enter:
* * * * * root ifconfig en0 down > /dev/null
0 19 * * * root ifconfig ...
3
votes
3
answers
2k
views
Running a cron job every other Monday
I want to run a job using crontab every other Monday. Is it possible?
3
votes
1
answer
291
views
Script to execute via cronjob that deletes all files in multiple directories
I'm hoping you can lend me your expertise.
I use shared hosting on Hostgator and need to figure out how to delete all .gz files in multiple directories every hour. I think I have the cronjob ...
2
votes
3
answers
9k
views
Why does this crontab file only run once?
I have the following crontab file:
2 * * * * /bin/date >> /home/jon/date_from_cron.txt
I think this means "run every two minutes". However, it only runs once. Shortly after setting up this ...
2
votes
2
answers
3k
views
Why is this cronjob not working?
I have a ruby script in ~/custom_scripts/get_all_products.rb.
I want it to run every night at 04:00.
Here's what the cronjob in crontab -e looks like:
MAILTO="<email>"
0 4 * * * ruby ~/...
2
votes
1
answer
7k
views
Cronjob for first day of month except sunday
I have such entry in my crontab:
0 0 1-2 * 1-6
It is correct that it would run at 00:00, 1st or 2nd day of the month from Monday to saturday?
For example, if 1st day will be sunday then it would not ...
2
votes
1
answer
3k
views
How to test cron @reboot entry?
How can I test if @reboot is working without the need of reboot the machine?
Is there anyway to force @reboot to entry to run?
Thank you.
2
votes
1
answer
967
views
I created Cron but I get errors that don't really understand
I created a crontab like this:
0 22 * * 2 /bin/echo " Hello World "
0 1 * * * /bin/echo " Test"
but I receive mails like this, what does it mean?
Subject: Cron /bin/echo " Test"
Content-Type:...
2
votes
2
answers
5k
views
Run Cron every 2 minutes in 30 minutes?
I need to run a cron job every 2 minutes (*/2) but only for the first 30 minutes of every hour, with pause of 30 minutes between the runs.
For example, something like:
From 10h00 to 10h30: run every ...
2
votes
1
answer
3k
views
Where to store security credentials (aka passwords) for special cron jobs?
I want to write a cron job that authenticates for a certain mail account. As there are multiple ways in giving the script those credentails: config file, hardcoded in script, arguments in cronjob call,...
2
votes
1
answer
489
views
Schedule a cronjob everytime it is done
I have a cronjon which runs every 48 hours. But ideally what I want is that it must start running as soon as it stops. Can this be done? It is an sh script consisting of a python command.
I am using ...
2
votes
2
answers
5k
views
How to set CRON to execute a php file outside of a public html folder?
I have a php file located at, let's say, for example:
/data/web/process.php
This file is not publicly available (no virtual host is running in that folder, but apache is installed). I need to ...
2
votes
1
answer
23
views
Trying to run a shellscript but not workung
My shell script is running when I manually run it. Cronjob is also working, al others are running but not this script.
This is my code.
30 3 * * * cd /var/www/html/cronjob && sh shellscript.sh ...
2
votes
3
answers
9k
views
Cron Command for twice a month on Sat @12am
I am wondering if someone can help with the simple but sometimes confusing commands regarding Cron jobs.
I would like a cron job to run twice a month on a Saturdat @12am.
1
vote
3
answers
1k
views
Cronjob as root?
I'm having a bit of a problem with cronjobs for backups.
I've set up the following in sudo crontab -e (not under personal account):
0 1 * * * /backups/dobackup
/backups/dobackup contains this:
#!/...
1
vote
5
answers
296
views
Cronjob not working
I've got a simple crontab for ripping my local radio station only when I want:
0 16 * * 0 /root/streamripper.sh
0 17 * * 0 killall streamripper
0 20 * * 0 /root/streamripper.sh
0 21 * * 0 killall ...
1
vote
1
answer
192
views
Why this cronjob wont run
On debian squeeze as user root I add this cronjob with "crontab -e"
*/1 * * * * root /usr/sbin/ntpdate ptbtime1.ptb.de >> /var/log/ntpdate.log
But this cronjob will not run, there is also ...
1
vote
2
answers
1k
views
Why cron saves at /root, when should at /var/www?
Why my cron */1 * * * * /usr/bin/php /var/www/query/query.php &> /root/querylog.log saves query.php output in the /root/ folder?
(this script shall save *.txt at its location)
It should do so ...
1
vote
2
answers
5k
views
Cron daemon running status check
I have a script which need to be run as cron job.
In the staging environment i could run the script as a cronjob. but in the production environment it is not working,
so i checked whether cron ...
1
vote
2
answers
3k
views
How do I make cron run a Java GUI application?
I have a script which runs a Java GUI application using "java -jar app.jar". I have added the script to the crontab to run every minute, check the processlist if the application is up. If it isn't it ...
1
vote
2
answers
1k
views
How to automatically restart crond if it is not running?
I use cron job to monitor and restart other services if they are not running. But how to monitor/restart crond itself?
1
vote
1
answer
844
views
scheduling with cronjob to run the php file for only one time
How do I run the php file only once using the cron jobs. i.e., to schedule task to work on 20/06/2015 10:30:00
I tried something like this :
30 10 20 6 ? 2015 /usr/bin/php /path/to/my/file/...
1
vote
2
answers
285
views
cron job not executing the binary in the time specified
I would like to check which is the environment being used if executing a cron job. I had it working before however it stopped at some point.
This is my cron job in the crontab file:
20 13 * * * /usr/...
1
vote
1
answer
61
views
Trigger a command upon every `crontab -e` edit
We are using a shared Linux server account where as everyone comes and edits the crontab. Usually we take a backup like this
crontab -l > `date +\%Y-\%m-\%d\_\%H:\%M:\%S.txt`
Is there an elegant ...
1
vote
1
answer
2k
views
Running a cron job every five minutes
I need to run a cron for sync command. Is it as simple as this?
*/5 * * * * --sync
Which I think will run the sync command every 5 minutes.
1
vote
2
answers
453
views
Cron Job command - understanding
I am using a cron job, received from one of my suppliers, in order to create/update the products data, stock, status, in my Woocommerce website.
I have installed their plugin, all verification are ...
1
vote
0
answers
144
views
Lynx-dump cron job not working after installing SSL certificate
I have a cron job that has always worked fine, until we installed an SSL certicate and updated our .htaccess file to redirect all http requests to https. Now, the cron job is not working and I'm ...
1
vote
1
answer
694
views
How would I make a cron job stop and start again?
I am trying to make a cron job that stops at 12am today(friday) then start again Monday at 7am, what would the script for this look like, I am new to cron jobs.
1
vote
0
answers
367
views
Task Scheduler don't start Task every hour (Windows 10)
I configured a powershell script to grab some reddit rss feed.
So I set the task to run every hour once to grab new feed items. But I can only run/trigger
it manually. It won't start at every even ...
1
vote
0
answers
1k
views
McAfee Endpoint Security for Linux Threat Prevention cannot schedule ODS-Tasks [closed]
McAfee Endpoint Security for Linux Threat Prevention, Version : 10.5.4.106
We are working on a Linux server with a pre-installed McAfee. The regular ODS-Scanning has been really annoyed us. So we've ...
1
vote
0
answers
92
views
Rebooting a Linux server with best practices. Should I save what?
I would like to know what steps should I take before rebooting a Linux server to avoid losing the configuration. Example: I made a rule with iptables manually, did not add to rc.local. This won't ...
1
vote
1
answer
926
views
Many cron -f processes on unresponsive server
My Debian server had again become unresponsive and needed to be restartet (SSH login impossible, no longer transmitted log data to another server's MySQL Database, no new FTP connections possible, but ...
1
vote
0
answers
224
views
Mac Crontab Deleted
I was messing around with creating cron jobs and somehow I wound up deleting crontab out of /usr/bin. Does anyone know of a way that I can recover it without having to re-install multiple components ...
1
vote
0
answers
1k
views
CronJob for asterisk queue to reset + FreePBX
I am having problems with this script...It doesn't seem to work.
Note: It sends email just fine.
#!/bin/bash
#Reset the queue every morning at 5:00AM PST
#v 1.1 changed email
#Email alert that ...
1
vote
1
answer
1k
views
What might cause cron jobs to occasionally not run or complete?
In my crontab, I have set MAILTO and a bunch of cron jobs (5-10 jobs).
These cron jobs usually run fine and I get emails for them. Most of these jobs consistently run as expected. Emails and ...
1
vote
0
answers
2k
views
Why does cron task run twice?
I have a task that should run each day in Ubuntu10.04. So I use crontab and copy the scripts of the task to the directory /etc/cron.daily.
Here is the my crontab:
# /etc/crontab: system-wide crontab
...
1
vote
1
answer
2k
views
Enabling crontab logging on openSUSE
I am trying to enable the crontab log on openSUSE 11.3. I searched the web but couldn't find how to do it. I only find information about Ubuntu. Tried editing the /etc/rsyslog.d/remote.conf file but I ...