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39
votes
3answers
82k 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?. I am running on Ubuntu 10.0.4 [Edit] The cron jobs will be running on a server....
23
votes
2answers
19k 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?
8
votes
1answer
2k 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.
7
votes
4answers
14k 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 ...
6
votes
2answers
2k 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 ...
5
votes
3answers
4k 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, ...
4
votes
3answers
1k 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
3answers
541 views

Running a cron job every other Monday

I want to run a job using crontab every other Monday. Is it possible?
2
votes
3answers
3k 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
2answers
17k 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 ...
2
votes
1answer
976 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
2answers
26k 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 *....
2
votes
2answers
283 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 ...
2
votes
2answers
2k 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 ...
2
votes
1answer
601 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
1answer
361 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
2answers
2k 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
1answer
265 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
1answer
313 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.
2
votes
0answers
94 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
3answers
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
1answer
192 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 ...
1
vote
4answers
236 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
1answer
112 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
2answers
555 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
2answers
4k 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
1answer
197 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
1answer
398 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-...
1
vote
2answers
3k 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 ...
1
vote
1answer
1k 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
1answer
34 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 ...
1
vote
1answer
719 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 ...
1
vote
0answers
76 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
0answers
304 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 ...
1
vote
0answers
734 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
1answer
440 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
0answers
1k 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 ...
0
votes
1answer
123 views

Cron strange behaviour

I've got a Bash script with all the permission to be excecuted, I attach it to to a cron job, this script basically only kill and restart a specific process, the strange behaviour is that if i run the ...
0
votes
1answer
104 views

Create a folder in Win 7 where files will be deleted after a specified period automatically

I would like to have a folder to put items for temporary use. Is this possible in Windows 7? Some sort of .bat file in startup? But I would prefer doing it without restart. Any hints?
0
votes
2answers
58 views

Cron job string settings to fire 4 times a day in between 5-10

* 5-10 * * * will fire the script between the said timings but how will I control the count? BTW the count and the timings can be anything, means it will be dynamic and not static. Just put up a ...
0
votes
3answers
43 views

Log time spent between switch a Windows on and off

I want to log the time I spend between switching my PC on and when I switch it off; like have a text file updated with records of each time I switch my PC in the morning and switch it off at the ...
0
votes
1answer
159 views

Printer unable to print “blank pages”

I'm using Xerox DocuPrint CP305 d. For some reason, I'm unable to get "blank files" printed. If there are contents within the file —e.g. the word "test", or even just a blank space character&...
0
votes
1answer
553 views

Shell script not running with cronjob

I am using PUTTY to reach the server. I can dump the databases with the following command: /usr/bin/mysqldump --all-databases | /bin/gzip > Backup_DB/alldatabases_test.sql.gz When I am running ...
0
votes
1answer
329 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.
0
votes
2answers
626 views

Cron job for moving directories older than 24 hours

Well, what I want to do is The cron should run every hour or so It should move the directories in a folder /disk1/data/ older than 24 hours to /disk2/data/ The directories moved should contain all ...
0
votes
1answer
778 views

copy file from different domain using cron job

I am having two domains and i need to copy some file from one domain to another. cp http://domain1.com/test.xml http://domain2/crontest/ I tried above but it dint work. Is there any other way?
0
votes
2answers
353 views

cron: log output of job, email errors?

This is a ridiculous newbie question, sorry! I am running a (Python) script regularly using cron. I would like to log the output to a logfile, and I would like to be emailed with any errors that ...
0
votes
1answer
2k views

How to update svn working copy via a cron when svn server is located on local server

Hey guys, I have two servers. One of them has a svn server running and another hosting projects. I have a daily cronjob updating the projects -- ie running svn update, rebuild etc. Now, my ...
0
votes
0answers
3 views

Install cronjob from file to a specific user

I have an install script that sets up a user. Using the install script, I want to apply a cronjob that gets executed by that user (myuser): 0 4 * * * /home/myuser/script-to-run-at-4am.sh I have ...
0
votes
0answers
16 views

Schedule the cPanel Transfer Tool

I'd like to schedule the transfer tool from cPanel, i'd like to do this daily to keep things synced with a failover backup server, identical to the first. I am looking at https://documentation.cpanel....