Cron is a time-based job scheduler in Unix-like computer operating systems. Cron enables users to schedule jobs (commands or shell scripts) to run periodically at certain times or dates.

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2answers
269 views

Remove all files in directory except last 20

I have question why is my cmd for "removing all files in directory except last 20" not working within cron but in command prompt yes. * * * * * ls -1tr /home/testusr/test | head -n -20 | xargs -d ...
0
votes
1answer
52 views

how to increase the size of /var/log/cron on cent os 6.4

how to increase the size of /var/log/cron on cent os 6.4. I wanted to keep the logging history longer. Thanks!
0
votes
1answer
633 views

Shell script only executes partially when run with CRON [duplicate]

I've written a shell script that does the following: Retrieve mail from a POP3 account (using GetMail) Save a copy of that email to S3 (using AWS CLI) Email me the filesize of the email The ...
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votes
1answer
52 views

run ubuntu crontab every 19th of the month in 2am [duplicate]

i'm not sure about something and that's why asking i want a process to run every 19th of the month in 2am i don't want the cron to run after that time or before and only when the date is 19th - in ...
1
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2answers
1k views

Capturing output from a remotely executed command via SSH fails in CRON

This question is in a direct relation to this one: ssh fails to execute remote command when run from cron bash script - works from CLI I'm not able to comment on the accepted answer as I don't have ...
1
vote
1answer
87 views

Difference between “crontab -e” & editing crontab file manually? [duplicate]

I noticed some people use "crontab -l" to view cronjobs and "crontab -e" to edit them. However there are also times where people manually modify "/etc/crontab" to view/add/remove cronjobs. Both ...
3
votes
1answer
121 views

Crontab - Unusual config - Skip a small weekly time window

I have a business requirement to run an unorthodox crontab schedule as follows: Everyday run a script from 1-21 Everyday but saturday, run from 21-0 So I was thinking this would work: 5 1-20 ...
0
votes
1answer
159 views

logwatch on Centos 6.4

My logwatch is configured correctly and is working correctly when I issue manually /usr/sbin/logwatch I added it to root's crontab and it is listed correctly when I make crontab -l which gives: 0 ...
1
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1answer
144 views

Programmatically adding two lines to crontab

I'm trying to add two lines to the root crontab when building an AWS instance. I have a set of commands that are part of the "user data". These commands are run as root when creating the instance. I ...
3
votes
2answers
239 views

hg pull from Bitbucket fails when run from cron

I have a local copy of a Bitbucket repo on one of my servers (under the user rob), and I created a script that runs every hour in cron and attempts to pull & update the local copy. The issue I'm ...
-6
votes
1answer
206 views

execute script at particular time in amazon ec2 linux [closed]

I am newbi in amazon ec2 as well as linux, I am working on pentaho kettle, for starting my job process i m using following command in amazon ec2 instance, cd /dev/pdi/data-integration (reaching to ...
1
vote
0answers
95 views

Incrontab does not execute command

I have copied this question over here from unix.StackOverflow When I use incrontab out of the box, I mean no changes, I get no result, as if the cmd was not executed. my incron line is : /crrae ...
6
votes
3answers
564 views

Crontab job dependency to prevent race [closed]

I want to run a cron every 5 minutes, but I don't want the next cron to run if the previous did not finish yet. What can be done about this? Are there any tools to support this? Thanks
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votes
2answers
242 views

Why cron job is not able to open X display connection [closed]

I have a java app rendering some sprites using LWJGL and OpenGL. It works fine until I move it to remote virtual machine with no phisical graphic card, Mesa 3d with related stuff is used to emulate it ...
-3
votes
1answer
79 views

Replace of cron job/cron tabs— Windows Scheduler [closed]

I want to know that there is any way to create an script on windows machine in PHP that should run after an interval, let's say every after 15 minutes. Currently I'm doing it using javaScript, but ...
-1
votes
1answer
2k views

Scheduled Task issue - /usr/bin/php/: No such file or directory [closed]

Can't get it working, I want to set up a cron job for a domain user in plesk 11.5, but seems that there's a problem to find the php executable. The command is: /usr/bin/php/ -f ...
-2
votes
1answer
261 views

Bash and cron error [duplicate]

The following cron job fails to execute. What's wrong with it? It works fine when I run it directly from the shell prompt. www-data@etl:~$ crontab -l SHELL=/bin/bash MAITO="" 0 5 * * * export ...
1
vote
2answers
602 views

Cron getting timeout when attempting to access url (wget).

I'm sure this is simple and I've been digging but no answer is quite as specific as I need it to be. The goal is easy, have Cron hit a url on my server every 5 minutes. All of that is set up and ...
0
votes
0answers
483 views

How to restart PHP-FPM from cron?

I'm trying to restart PHP5-FPM periodically using Cron, but am having no luck. I can restart manually with no problems, using service php5-fpm restart or /usr/sbin/service php5-fpm restart However, ...
0
votes
4answers
412 views

cron job executing script [duplicate]

I have created a script that works as expected in shell but cron job does not seem to run it. when I check my cron mail, I see that it prints "hltv is not running" but does not create a screen ...
1
vote
1answer
254 views

Reliably running background operations

I'm looking for a recommendation on how to reliably run background operations. I have many servers posting operation messages to AWS SQS, and I have another server which will run these CPU intensive ...
0
votes
1answer
27 views

Cron environment inconsistency [duplicate]

I've seen some inconsistencies between the cron environment and my environment. For example, I have installed paver (pip install paver) in my environment and calling paver works paver. Using paver in ...
1
vote
3answers
2k views

keeping a remote server up to date with git repo

So, I'm aware of git hooks, and will be looking into those next, but want to write a simple bash script, run via cron, to keep a repo on a remote server up to date. I imagine it working like this: ...
0
votes
1answer
694 views

Adding OpenVPN client connection to cron [duplicate]

I wrote simple server-client OpenVPN config files: server.conf dev tun0 ifconfig 10.8.0.1 10.8.0.2 client.conf dev tun0 ifconfig 10.8.0.2 10.8.0.1 remote 192.168.0.123 which basically is a ...
5
votes
3answers
1k views

Cron expression: difference between 0/1, 1/1 and *

In a cron expression, what is the difference between 0/1, 1/1 and * ?
1
vote
3answers
176 views

crontab cannot find script

I have a cron job that runs under my user once per night. I installed it using crontab -e and a by adding the line: 0 1 * * * /home/username/diskreport.sh The crontab is set up so that ...
2
votes
1answer
201 views

Disable mailing in cron globaly

The web is full of suggestions how to disable mailing in cron like asked here stop linux from emailing me cron errors?. Is there really no global config flag I can set to disable mailing in cron for ...
0
votes
2answers
47 views

How to automatically send email when process is using more than xxxMbit/s

I haven't found anything for that. How could I automatically send an email (via crontab) with the ID of the process, the user & finally what's the name of the process for example when this process ...
0
votes
1answer
97 views

Windows Scheduled tasks ends prematurely, so server doesn't run

I'm trying to run Django on my Windows Server 2008 machine. I can do this manually by calling python manage.py runserver 54321, which launches Django's server at http://127.0.0.1:54321 -- then I can ...
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0answers
209 views

Root cron job can't read file from /root/

I've got a cron job in root's crontab defined like this: 0 1 * * * /usr/local/bin/tarsnap-backup-script > /tmp/tarsnapcron.txt 2> /tmp/tarsnapcron.err The script is a python script that ...
0
votes
1answer
595 views

Why is cron running twice?

I wanted to execute my PHP mailing-script automatically with cron. I always get the mail twice though. The script runs fine when started manually. I put this in the crontab for testing: 54 13 * * * ...
1
vote
1answer
201 views

Is it possible to make an individual daily cron run with UTC time while keeping the system localtime?

I have a cron script under /etc/cron.d as so: SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin 0 0 * * * root /usr/local/sbin/app_logrotate >> ...
0
votes
1answer
817 views

Compress and remove logs from jboss on linux with cron

I need to compress and remove log files after some time from serwer. I have never write scripts before. So far i have script logs.sh: #!/bin/bash LOGS=/usr/local/jboss/server/default/log/ ...
3
votes
1answer
310 views

Wheezy processes die periodically

I have a very weird problem. Certain processes on my mail server, but not all, die periodically (every second month or so). A few of the process that die are: ssh dovecot postfix Processes that ...
2
votes
2answers
421 views

Exim - Force Messages to domain before retry time

We have exim running in queue-only fashion. The reason is that we are a bulk sender (a legitimate, double opt-in) and have experienced Yahoo and Hotmail throttling. The best practices state that once ...
1
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0answers
44 views

Won't keychain --clear in .bash_profile interfere with cron jobs?

Keychain tutorials recommend adding /usr/bin/keychain --clear to ~/.bash_profile to only allow cron jobs to use passwordless login. I'm not sure I understand how this works. If I take it right, the ...
-1
votes
2answers
35 views

Crons excluding specifc time ranges [duplicate]

I have many crons that run at different intervals. I need to configure them all to not run between two specific time ranges. How can I configure a unix cron to run exclusive of 11:45-13:00 and ...
1
vote
2answers
978 views

Linux Bash IF conditions not processing when running as crontab

So I've made myself a little script which monitors my served directories for any PHP files which have changed. It's designed to run every 5 mins from crontab and email me any changes so that I can ...
-1
votes
1answer
118 views

Crontab not executing [duplicate]

I'm running CentOS 6.2, trying to run tasks through cron. I've verified crond is running $ service crond status crond (pid 20553) is running... I have no /etc/cron.allow file, but I do have an ...
1
vote
1answer
218 views

Cron not running script [duplicate]

I have a script that works when called: /usr/local/bin/myscript #this works fine Permissions for the file are: -rwxr-xr-x 1 root root 155 Jan 27 09:34 myscript I've added a line to /etc/crontab: ...
0
votes
1answer
294 views

Change cron.daily run time on ubuntu

Am I correct in understanding that to update the time that a daily cron job runs (from /etc/cron.daily/), all I need to do is update the /etc/crontab file? Are there any risks I should be aware of ...
0
votes
2answers
833 views

Why unison does not run in cronjob?

I want two way data sync between two CentOS based servers, so I installed Unison on both of my CentOS servers. I made a script file on root which runs unison and works fine, and syncs the files, when ...
0
votes
2answers
94 views

Cronjob screen PHP does not executed [duplicate]

If I execute the following in the terminal it works: screen -dmS tt-rss-daemon sudo -u www-data /usr/bin/php /usr/share/nginx/www/tt-rss/update.php --feeds --daemon If I write the following in a ...
0
votes
3answers
2k views

Cron task error: WRONG FILE OWNER

I'm using the /etc/cron.d/ folder to store my cron tasks. These tasks are symlinks to my actual file which is kept under VCS. These files are owner by a user named "www-data". I've read that Cron will ...
1
vote
1answer
251 views

Issues with MySQL restart on running through a crontab scheduler

I have written a shell script which starts MySQL when its killed/terminated. I am running this shell script using a crontab. My cron looks for the script file named mysql.sh under /root/mysql.sh ...
1
vote
0answers
31 views

crontab not outputting to log when cronlocks removed on some files

I'm running a variety of crontab curl requests and I'm not sure why SOME of them stopped outputting the contents to log files. The only change I made was removing cronlocks from all of the entries ...
-1
votes
1answer
506 views

VPS debian 64 bits put cron to reboot at 7:00 every day

I have a VPS with debian 64bit. And I would like to set a daily reboot at 7:00 with $ ps aux root 1844 0.0 0.1 18832 964 ? Ss 07:23 0:00 /usr/sbin/cron so the cron it's ...
0
votes
2answers
156 views

how to prevent crontab logs from registring in syslog?

I have separate my crontab log into cron.log file by uncommenting the below ling in /etc/syslog.conf, But it register in syslog too. cron.* /var/log/cron.log How ...
-1
votes
1answer
434 views

Crontab is Not Running Crons [duplicate]

I have crontab setup on my CentOS VPS and it is not running... Here's the cron file: * * * * * php -f /var/zpanel/hostdata/zadmin/public_html/pingrglobe_com/crons/1min.php * * * * * php -f ...
2
votes
1answer
75 views

CRON job running but no sign of it in any file

This is an odd one and I know that the answer will be something simple that I have over looked... I have inherited responsibility for a Linux server running an old version of Ubuntu 10.04, it has a ...