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.

learn more… | top users | synonyms (2)

1
vote
1answer
318 views

SQL Server DBA moving to Greenplum / Postgres on Linux ( Centos ) looking for friendly MS Sql Agent like scheduler instead of CRON

To be honest, I and others are spoiled by Microsoft's SQL Agent. We'd really like to keep properties of SQL Agent : the features, the usable GUI. I searched serverfault for an evaluation of ...
0
votes
1answer
22 views

Delete files with logrotate

Is it possible JUST to delete the log files in a directory by using logrotate w/o actually rotating them? We have an app that generates logs in the following format: app.log.DD_MM_YYYY. I am ...
0
votes
1answer
27 views

cron and lftp issue

I have the following scripts running on raspbian. start #!/bin/bash /root/config/commands 2>&1 > /root/log/$HOSTNAME.log commands #!/bin/bash source /root/config/variables echo TestLine ...
0
votes
1answer
34 views

How to filter cron messages in syslog-ng

I have a litte problem. I dont know ho to filter cron jobs in syslog-ng. It's spamming my log. Jun 05 16:09:01 CRON: pam_unix(cron:session): session opened for user root by (uid=0) Jun 05 ...
0
votes
1answer
64 views

Server crashing daily at 3:40am

I have a cloud server with rackspace. It is CentOS release 5.10 (Final). 40GB storage, 1gb ram, 2gb swap. I am running the kloxo control panel to manage the virtual hosts. Every day it eats up all ...
0
votes
1answer
41 views

centos 6 64bit crond not running on startup?

I have two VPS from ramnode, centos 6 64bit. I have reinstalled server 2 several times and also tried 32 bit centos 6. Same problem. Whenever I type reboot and then service crond status it says ...
0
votes
1answer
67 views

How can I tell a script is running under cron?

Is there a standard way to know if a shell script is running under cron as opposed to running from the command line. i.e. I'm thinking of running with more verbose output when manually kicked from the ...
0
votes
1answer
71 views

Wal-E cron job not executing

I have a cron job setup that is suppose to be running the wal-e backup-push command. The command works fine if manually ran through the command line. As the postgres user of course. So I setup a cron ...
0
votes
1answer
113 views

Unable to send external email via crontab

I'm trying to send email out from crontab. I've tried making crontab run a basic shell script, as well as specifying the actual command within the crontab. I've tried doing this with mpack and ssmtp . ...
0
votes
1answer
187 views

Cron occasionally fails with “grandchild #X failed with exit status 3”

I have cron jobs and every now and then they fail. Just after log message that the command has started, there is grandchild #X failed with exit status 3 message. On the next run scripts finishes ...
0
votes
1answer
108 views

CURL isn't running from Crontab

Here is the output. Not sure if cron isn't running or other issue. If I issue curl --silent http://..../scanner.php from terminal, I'm getting desired output. Actually scanner.php do some check and ...
0
votes
1answer
111 views

Cron bash script skips second do/done set

I have a script that checks IPs for ping reply then tries to run an snmpwalk on them. I am trying to schedule the script to run weekly in cron. When I run the script in the shell, it runs perfectly. ...
0
votes
1answer
89 views

Daily postgresql cron error log file

I am getting these emails daily: /etc/cron.daily/logrotate: error: error accessing /var/log/postgresql: No such file or directory error: postgresql-common:1 glob failed for /var/log/postgresql/.log ...
0
votes
1answer
127 views

Spam emails from Suse server: test -x /etc/init.d/sendmail && /usr/share/sendmail/sendmail cron-msp

Have a virtual server with old Suse. About a month ago cron started spamming me with emails like this: Subject: test -x /etc/init.d/sendmail && /usr/share/sendmail/sendmail cron-msp ...
0
votes
1answer
28 views

Starting a detached screen has no effect

I want to start a shell script in detached mode on ubuntu bootup (via cronjob @reboot) but it doesn't even work when I try it directly. Syntax: screen -d -m -S myscreenname /path/to/my/script.sh ...
0
votes
1answer
253 views

How to make sure script is always running?

I have 4 scripts in crontab that start on server boot. After 12 hours or so, some throw an exception and stop running. At that point, I want my server to just start the script again, so each script is ...
0
votes
1answer
508 views

ssmtp won't send cron email

I can't figure out why cron on my AWS EC2 (Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-32-generic x86_64)) can't seem to send email out via sSmtp to AWS SES. This works: echo "test" | ssmtp my@myemail.com ...
0
votes
1answer
76 views

Binding timestamp value to a variable in crontab

I'm basically trying to declare a variable with a date() value in crontab as I will constantly be using the same date structure over and over, here is what my crontab looks like so far. php = ...
0
votes
1answer
769 views

sending email from cron in html format not text

i am trying to send email every 1 hour from cron job which is executing a php script that fetches data from database and shows in a table format. i have CentOs 6.1 where i created my cron job.firstly ...
0
votes
1answer
196 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 ...
0
votes
1answer
590 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
1answer
773 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 * * * ...
0
votes
1answer
960 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/ ...
0
votes
1answer
780 views

Cron won't use msmtp to send emails in case of failed cronjob

I'm trying to configure a machine so that it will send me an email if one of the cronjobs output something in case of an error. I'm using Debian Wheezy. Cron is working normally (without the email ...
0
votes
1answer
401 views

Unable to get cron to append output from wget

I have a cronjob setup and running, but the logfile keeps getting overwritten every time it runs. I would like for the wget output to be appended each time the cron runs. Why is this and how do I fix ...
0
votes
1answer
48 views

Include executed cron command when outputting to log

Is there a way I can include the command that was executed in the output when I'm logging to a file? For example: * * * * * date && /path/to/php /path/to/script.php >> cron.log ...
0
votes
1answer
113 views

Can't stop LAMP graceful restart

I just got my first LAMP up and running, everything works fine except that my server is restarting itself every sunday. When I read the logs I see "Graceful restart requested, doing restart" Should ...
0
votes
1answer
337 views

cron job not running the script that start vncserver

Hi I wrote a script to start my vncserver when I call it manually via command line. It works as follows: the script is in usr/bin I gave it the right authorization (chmod u+x startvnc) but wen I ...
0
votes
1answer
442 views

How to stop long-running cron process from being killed

I have a long-running cron process, running a Python script, that seems to get randomly killed. In dmesg I see: [230568.077358] init: cron main process (890) killed by TERM signal [237517.974422] ...
0
votes
1answer
227 views

Logrotate rotating daily but should be rotating weekly

For some reason logrotate is rotating logs daily instead of weekly, even though all the config files for logrotate seem to be set to weekly. Any ideas? /etc/cron.daily/logrotate #!/bin/sh test -x ...
0
votes
1answer
98 views

Changing IP of the machine at regular intervals

I have a pool of public IP addresses. There are some services in my box which binds to these. What i'm trying to achieve is to automate the IP change process. Best way to do this is to write a script ...
0
votes
1answer
261 views

Running cronjobs with proxy

I have a requirement where I have to run several cron jobs with specific IP in an EC2 instance. That specific IP is used by another EC2 instance. I have access to that EC2 instance. Is there any ...
0
votes
1answer
67 views

Centos: List all cron jobs in a week ordered by date

I'm trying to get all cron jobs in the current week (or from monday to sunday) ordered by schedule time. I'm trying with some elaboration on the output of the command crontab -l I appreciate ...
0
votes
1answer
367 views

SFTP download the files and then i wanted rename the server files how to do this?

I have to setup with the banking interface where I need to connect to the remote bank and then download the files in the bank server in-box to my local server for further processing so i do following ...
0
votes
1answer
805 views

let CRON send emails through SMTP ( debian squeeze )

i would like to send emails whenever a cronjob has completed, i read that this is possible with exim4. in /etc/alias i added the line myuser: mygmail@gmail.com in /etc/exim4/update-exim4.conf.conf ...
0
votes
1answer
433 views

Linux CentOs 2.6.18 Setting locale for cronjobs

I have the problem, that I am trying to automate some Informix database job via the crontab. The job runs fine when done via the command line or processed via the at queue, but not via the crontab. ...
0
votes
1answer
333 views

Cron task failing on specific job

On my server I am getting the following error when running one of my cron tasks: CRON[9913]: (CRON) error (grandchild #9915 failed with exit status 127) The server is running ...
0
votes
1answer
129 views

Virtual server (VM) running Ubuntu re-configures itself?

I'm helping to administer a VM running Ubuntu with Media Temple. The hostname was changed, and sendmail was removed and replaced with exim4. To change the hostname 'sudo hostname newhostname' was ...
0
votes
1answer
283 views

solaris + run script every night one time from the crontab

I build in my Solaris machine new script Script name: send_brd_msg.sh ( this script located under /var directory I want to activate this script every 12:00 at night by the crontab Please advice ...
0
votes
1answer
272 views

Can we list all possible reason for a cron job crashed or killed?

We have some cron jobs which cannot be dead otherise the consequence would be davastating. So we need to have an eye on the process and know exactly what cause the death of a job. So I would like to ...
0
votes
1answer
285 views

Any chance a crontab entry is deleted automatically after the entry is commented?

Maybe I'm mistaken, but it seems that every-time I commented out a crontab entry, it will deleted automatically. eg. ssh server crontab -e commented out an entry using "#", save and quit Next day ...
0
votes
1answer
147 views

Simple cronjob issue (I think!)

I am a Unix/Linux n00b. I have a VPS running CentOS with WHM/cPanel. I comissioned the installation of ASSP Deluxe, which is a third-party anti-spam solution. Everything works great. One of the ...
0
votes
1answer
311 views

Curl doesn't work in crontab

I'm new to set up server settings and to the whole unix thing so maybe this is simple. I'm trying to start crontab with curl in but it doesn't work. I want it go to file and send email every 30 ...
0
votes
1answer
146 views

Services Similar to Cronless?

Are there any other well known cron alternative services to manage large amounts of automated tasks, such as curl'ng a url at a certain frequency? The only one I have found is cronless.com
0
votes
1answer
339 views

Run crontab to click a website link every hour

I would like to click on a test like this (the "start testing" button) every hour so I can get a hourly result (results are saved on the server side). Basically what happens is that I connect with a ...
0
votes
1answer
98 views

how large size support `crontab.txt` on linux serve?

I have a long long list of task list in crontab.txt, my crontab.txt over 5MB, will it cause fault in linux serve? (has lunux dad a limit size requiry?) And is it good to write a task list like ...
0
votes
1answer
81 views

How to dump a stream for a defined amount of time on a schedule basis

I have a video stream from a video4linux device /dev/dsp/adapter0/dvr0 I want to programmatically dump this stream for a predefined amount of time. I think to schedule the jobs I might use cron and ...
0
votes
1answer
478 views

using outside smtp to deliver cron generated emails

I want to deliver cron generated emails to my id, abc@example.com instead of being saved on /var/spool/clientqueue I've done the following: echo "set smtp=smtp.example.com" > /root/.mailrc echo "set ...
-1
votes
1answer
95 views

How can I flush and/or rotate cronevents?

Can anyone tell me how I can flush / clean / zeroize or better still rotate the contents of cronevents? I need to solve this, because I am attempting to 'productionize' my fileserver instance-pair ...
-1
votes
1answer
204 views

Allow nginx www to run Centos at command

I have a job which created by PHP script running as www (nginx) 31 2014-06-09 19:08 a www After the time passed, the job is executed but nothing happens. But if i run it as a root, 32 ...