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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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 . ...
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1answer
38 views

Send email on ldap creation

I have an LDAP server setup on a server running Debian 7 and I wanted to make it send out an email whenever a new user was created on that LDAP. I thought a cronjob would be best, but I have no idea ...
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1answer
234 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 ...
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1answer
868 views

Openshift cron not working

I'm using OpenShift and I have a shell script that is executable and can be run from the command line, however cron doesn't seem to even attempt to run it. I have placed my shell script in ...
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3answers
4k views

root + crontab : permission denied [duplicate]

I'm using Debian 6, all patched up, but when I try to access crontab as root, I just get a permission denied: root@server:~# crontab -e -bash: /usr/bin/crontab: Permission denied Please note this ...
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1answer
144 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 ...
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1answer
145 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 ...
3
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1answer
269 views

How can I find what's starting crond?

I need to stop crond at the command line. (I'm writing a script which needs to stop it, do some work, and then start it again. I'd rather not remove and replace the crontab file because it's more ...
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1answer
249 views

Automysqlbackup - dumped files have wrong permissions

This question has been askewd here. But it was not answered. I just got a 3rd server and on all 3 servers I use Automysqlbackup script to create MySQL backups. I do it with cronjob: 52 04 * * * ...
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2answers
239 views

Hourly Clamscan cron script failes at reading file list

I've this piece of code located in /etc/cron.hourly/hourlyclamscan. #!/usr/bin/bash # Create Hourly Cron Job With Clamscan # Directories to scan SCAN_DIR=/home/transmission/Downloads # Temporary ...
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2answers
1k views

Is there a way to restart automatically the HHVM service if I get a '502 Bad Gateway Error'?

I've reported the error on stackoverflow - from time to time my Nginx/PageSpeed+HHVM+MariaDB+WordPress blog stops working. There is some problem with the HHVM service that I don't locate, and I'm ...
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2answers
6k views

Cronjob run every two weeks, on Saturday, starting on this saturday [duplicate]

Today is Friday, October 3, 2014 3:58 AM I want to schedule a cronjob like that to run it at the following dates: Saturday, October 4, 2014 8:00 AM Saturday, October 18, 2014 8:00 AM Saturday, ...
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2answers
216 views

crontab's invalid time checking is inconsistent

One of our DBAs created the following crontab entry to run a backup every 3 hours starting 6:30 AM to midnight every day: 30 6-24/3 * * * (path to backup script) Cron took the entry but did not run ...
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2answers
3k views

What mailer does cron use to send mail?

I am trying to debug an issue with cron not sending mail on a Centos 6 box that I did not configure. How can I determine which mailer cron is using to send mail? The crontab man page has this to say, ...
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1answer
133 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. ...
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0answers
283 views

cron vs anacron on server machine (AWS instance)

During review of environment which I took over I've discovered that Amazon Linux uses anacron by default which means that cron.weekly jobs are executed somewhere between 3a.m. and 10p.m. Moreover - ...
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1answer
120 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 ...
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1answer
503 views

Sending cron output as a text file attachment

I sysadmin a multiplayer game at CentOS 6.5 Linux server for a customer. The customer has requested me to send the daily chat logs (to identify and ban agressive players) - as a text file ...
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1answer
135 views

Cronjob for a bash script pauses for 2 minutes randomly

I have been running a bash script on CEntOS 5.5 machine that checks replication on a remote mysql server. The script creates a temporary lock file and is scheduled to run in Crontab every minute. But ...
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1answer
23 views

some services switched off automatically

with my company we have a VPS. We have some issues with it. this morning the pure-ftpd was stopped. I had to start also postfix and the cron jobs were off for 3 hours. My config : Debian GNU/Linux 7 ...
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1answer
2k views

Should I use cron.hourly or crontab?

It seems that all the suggestions for using/scheduling awstats is via crontab, as such: 0 * * * * /usr/local/awstats/wwwroot/cgi-bin/awstats.pl -config=mysite -update >/dev/null (running awstats ...
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1answer
98 views

zip in cron doesn't work, but zip from command is working [duplicate]

I need to back up a directory with zip -r /savehere/backup_`date +%y%m%d%H%M%S` /save/this -q It works fine. But not from crontab: * * * * zip -r /savehere/backup_`date +%y%m%d%H%M%S` /save/this ...
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2answers
795 views

crontab fails, cannot find aws executable

I am trying to run a backup script on my ec2 amazon server (ubuntu 14.04), to automatically create a snapshot of amazon ebs volumes. Therefore I am using the aws-missing-tools script: ...
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1answer
54 views

simple crontab every 5min not working [duplicate]

I am trying to setup a crontab to execute a command from a specific user. Here is my code in "crontab -e". Why is this not working ? */5 * * * * user /home/user/whoami>swag.txt I am running ...
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3answers
89 views

Crontab is not working [closed]

I am trying to add a new script to crontab using putty. I am following these steps: open putty enter my username / password enter command crontab -e to create new crontab copying this command to ...
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1answer
541 views

Have a Vagrant VM destroy itself or power off on completion of a long-running task

I've been using Vagrant with Ansible to perform certain ETL tasks. This has provided some flexibility and transparency: jobs can be easily be moved around and the YAML playbook provides some level of ...
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4answers
5k views

APT FATAL -> Failed to fork

I saw a lot of questions regarding this, but mine seems a little different. Here's what I receive: /etc/cron.weekly/apt-xapian-index: FATAL -> Failed to fork. run-parts: ...
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2answers
2k views

Cron not launching python script

Python script is not being run, all other functions are running and stand alone script runs but combined... nada. Initially it was */30 * * * * screen python ~/db_preset.py (Yes there was new line ...
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votes
1answer
86 views

issues with cron file in cron.d

running amazon ami (similar to centos.) this is what I found on cron file under /var/log : Sep 4 15:32:01 mike crond[2289]: (root) BAD FILE MODE (/etc/cron.d/mytasks) and this is my file mytasks ...
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votes
3answers
117 views

crontab job is setting date wrongly [duplicate]

I need to set date and time in my server in order to make them synced always. I cannot use ntp inside my channel due to proxy issues. I've found this workaround. It works fine when I run it in command ...
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2answers
233 views

cron ignores changes to /etc/crontab

I'm seeing strange cron behavior which I'm not sure how to debug and fix. It ignores changes to /etc/crontab until restarted, e.g. I edit /etc/crontab adding * * * * * root echo 'weee' > ...
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1answer
120 views

crontab truncates file path

I try to run the following command: crontab -u root /root/iss/current/node/bin/installers/nl_brandless_selector_full_hd/nl_brandless_selector_full_hd_cron_file But I got an error like this: ...
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votes
3answers
304 views

cronjob or similar to open a local php file including query [closed]

How do I open the following file with cronjob correctly every 5 minutes: /var/www/mysite/folder/foo.php?query=1 I tried myself but i just did not get it working... i tried with /usr/share/php5 , ...
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1answer
2k views

cron.daily not running at the time it should?

My /etc/cron.daily scripts seem to be executing far later from what I understand they should. I am in Ubuntu and anacron is installed. If I do a sudo cat /var/log/syslog | grep cron I get something ...
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2answers
4k views

Kill all currently running cron jobs

For some reason my cron job scripts aren't exiting cleanly and they're backing up my server. There are currently a couple hundred processes running for one of my users. I can use the following command ...
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votes
1answer
1k views

Crontab not working to send email [closed]

I have CentOs 6.5 running on a VPS Host. I installed crontab and email using the below commands yum install vixie-cron service start crond chkconfig crond --levels 235 on yum install sendmail ...
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votes
3answers
14k views

How to fix a crontab access issue with a pam configuration error message? [closed]

I attempted to access my crontab as the non-root user "coins" when I encountered a permissions issue as shown in the following error message mentioning the pam configuration: [coins@COINS-TEST ~]$ ...
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0answers
25 views

Crond stopped sending e-mails for no apparent reason [duplicate]

I have a cron job that I want to run just once a day (executes a rake task), but while I'm testing it I have it set to run every 5 minutes. It was running perfectly fine this morning and sending me ...
4
votes
2answers
3k views

crontab listing or editing results in fopen: permission denied

Recently, a job configured to run from a user's crontab stopped executing. When attempting to list or edit the crontab for the user, the result is: user@host:~$ crontab -l crontabs/user/: fopen: ...
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1answer
167 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
1k views

Problems with a PHP include from the command line (or cronjob) [closed]

I am trying to setup a cronjob on my AWS EC2 instance. There is nothing wrong with the actual entry in the crontab file but when I try to run the command in the command line I get this response. PHP ...
0
votes
1answer
270 views

Why does this command to send emails work from the shell but not as a cron job?

I have a problem with cron jobs, I need to send email notification to users, I use this command curl "http://example.com/index.php?option=com_community&task=cron">/dev/null 2>&1 When ...
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1answer
30 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 ...
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1answer
316 views

MySQL: Error establishing a database connection

I'm running a DigitalOcean.com Virtual Server with the typical Ubuntu LAMP Stack for a few WordPress sites. Of course, every week or two the MySQL service seems to crash. If I restart MySQL or the ...
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1answer
369 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 ...
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1answer
1k 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 ...
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1answer
85 views

Where does cron store the real-time stderr logs?

I've got a cron job configured to run a command like some-command 2>&1 >/dev/null | tee -a /tmp/some-command.STDERR.$(date +\%Y-\%m-\%d.\%H.\%M) I've also got a tmpreaper cron job that ...
1
vote
1answer
4k views

Python script succeeds manually but fails on crontab

So I'm currently trying to get a script working but it's behaving differently when I run it manually than when I run it from crontab. Basically, I have a reverse ssh tunnel set up from one server to ...
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1answer
604 views

run multiple instance of same php script from bash

I am running a cron job to execute a php file multiple times per minute like this * * * * * /usr/bin/php /var/www/html/myFile.php >> /var/www/html/cronlog 2> /dev/null * * * * * ...
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1answer
263 views

my crontab doesn't send mails anymore

Before saturday, mailing after crontab executions were working but from now on, it doesn't work at all, but the config didn't changed. Operating system : Debian 7.5 I tried using PHP the mail ...