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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19 views

Free Nas Cron Job not finishing

I have a simple backup archival bash script that runs every night. I have 8-10 directories for our database servers with dump files of all the databases. The script in question is supposed to loop ...
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1answer
23 views

How to detect if a longer chain of commands in cron fails?

I want to create a crontab wrapper in python that logs if a crontab entry fails. It should be useable like this: 0 * * * * cronwrapper -c "some_command | some_other_command & third_command ...
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1answer
27 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 ...
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2answers
26 views

how to stop cron mail receiving in spam folder?

I have added a cron job for my incremental backup, and I configured it like this.But my mail goes to spam folder.so iclick not spam option in mail.it moves to inbox.but again it receives in spam 0 23 ...
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31 views

cron job doesn't run under specific account

I have a crontab entry on my RHEL 5.4 system under the "oracle" account but it never seems to actually run. I have the following entry: * * * * * /home/oracle/blahblah.sh > /tmp/test.log ...
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1answer
25 views

Run cron jobs in different TZs

I have several cron events that need to run but on different timezones. For example, I have one event that runs every day at 08:30 UTC, and another event that runs every day at 09:30 CET. I've read ...
0
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3answers
102 views

How to send an e-mail after a cron job [duplicate]

I have added a cron job for my incremental backup, and I configured it like this: 0 23 * * * /usr/bin/rsync -ravzX /mnt/external/project/ /media/backup/project/ | mail -s "Backup Success" ...
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1answer
19 views

Issues with Webalizer cron job throwing error due to file cannot open - how to Fix?

So I have a newly installed server running Ubuntu 14.04 with the default install of Sentora the free open source control panel. I did not make any customization to webalizer or cron. So I am unsure ...
0
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1answer
72 views

Add cronjob with bash script - No crontab for root [duplicate]

I have a deployment script and in it I'm trying to add a cron job. This is the code I am using which I found on stackoverflow. I'm running debian 8. # ADD CRON crontab -l > mycron echo "10 * * * * ...
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1answer
30 views

Disable cron jobs or cron daemon on Ubuntu 10.04 server in rescue mode

I am trying to recover an Ubuntu 10.04 server in rescue mode and I want to stop cron jobs and/or cron daemon running on reboot. So far I have: Edited the cron files in /var/spool/cron/ renamed ...
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2answers
20 views

Crontab, keep output log, but disable email sending

For now I have crons like : 45 * * * * www-data php /var/www/console cmd:dispatch --env=prod 2>&1 > /var/log/cron/cmd_dispatch.log And I'd like to disable email sending. In order to ...
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4answers
42 views

Is it possible for a cronjob to start before MySQL starts?

I am on CentOS 7, and if I put: * * * * * python script.py It works. If I put: @reboot python script.py Then it says it cannot connect to MySQL. If I run it from command line too, it works. ...
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6 views

Codeigniter logs: Database Driver Class Initialized 'a zillion times' [migrated]

We are currently trying to boost performance on some CRON jobs since they tend to throw a memory size exhausted error sometimes. In the logs we notice A LOT OF 'DEBUG - 2015-04-22 10:32:45 --> ...
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0answers
24 views

Default umask for cron jobs [migrated]

How to set default umask for cron jobs, please? (On RHEL 6.) Jobs are started under non-interactive (obviously) no-login (?) shell. Not only I prefer dash over bash. But consider also bash called as ...
1
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1answer
52 views

Why is PATH wrong with cron entry? [duplicate]

I have an entry in cron.d: 31 17 * * * root /home/some_user/.bash_profile; /home/some_user/bin/some_script The profile sets a specific path, and I echo the current path in the profile to ensure its ...
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1answer
36 views

Crontab is delayed by 2 hours [duplicate]

I have got a problem with two crontabs that execute some operations on my website: the first one run a command every 3 minutes and the second one at 5am in this way: m h dom mon dow command 0 ...
0
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1answer
135 views

Inside Docker container - crond running but no cronjobs executed

I have built a container from a Dockerfile, based on an Archlinux base image. Using a "RUN" command I have installed "cronie", since Arch does not come with any form of cron. Now, after the container ...
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3answers
42 views

Monitoring file for changes and immediately take action on change

How can I constantly monitor (small) file for changes? Eg. when file is updated (action from web application), a script is executed (if not already running). Right now, I do it every minute using ...
6
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2answers
125 views
+50

cron job occasionally not running

I have a CentOS 6.6 server with the following packages installed: crontabs-1.10-33.el6.noarch cronie-1.4.4-12.el6.x86_64 cronie-anacron-1.4.4-12.el6.x86_64 kernel-2.6.32-504.3.3.el6.x86_64 ...
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0answers
56 views

Cron not running at specified time

I have a new Centos 7 system and having a trouble with cron jobs not runnning at the specified time: [root@media cron.d]# cat /etc/cron.d/rsnapshot 30 02 * * * root /bin/rsnapshot daily 00 02 * ...
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1answer
83 views

Run cron in centOS as user process, not daemon

According to this site, an easy way to set up a scheduled task in a single Docker container is to create a single crontab that runs your task, and then invoke it as the last Docker CMD with the line ...
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2answers
41 views

What shell is used by cron?

cron runs shell commands from crontabs. But having just got caught out by the differences between zsh and bash, I'm now concerned that I don't know which shell cron uses to interpret crontab ...
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1answer
131 views

Timezone issue with cron inside a Debian Docker container

Here is my Dockerfile (or at least the interesting part): FROM debian:7 MAINTAINER pjb <pjb@example.com> RUN apt-get update && apt-get install -y build-essential ntp cron ADD ...
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1answer
147 views

openshift, cron, node, line 1: syntax error near unexpected token `('

I'm pretty sure this is some kind of config problem, or something like that. I'm using node V 0.10 and the cron cartridge V 1.4. Here's my bash script to run my node script: #!/bin/bash node ...
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2answers
79 views

mysqldump connects as different user from cron and from command line

I had a bug in a backup script running as a cron job which I found and corrected, but I'm still puzzled by the fact that this bug did not show up when the script was started from the command line. The ...
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1answer
51 views

Cron errors routing to external mail server instead of local

For some reason some usernames on a Solaris 10 system that have cron jobs send the cron errors to an external mail server to be routed back to the generating server which is blocked because of ...
0
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1answer
81 views

“NTP socket is in use” messages from ntpdate in syslog

In cron.log I can see that ntpdate is being triggered from a cron job which is running daily at 23:15 Mar 10 23:15:01 seitan /USR/SBIN/CRON[22407]: (root) CMD (/etc/network/if-up.d/ntpdate) But ...
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148 views

php curl does not execute url

Im writing a php cron script that needs to run a url After some database modifications the php script needs to execute an url $url = ...
0
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3answers
72 views

Load users environment variables in a cronjob

How can I load the users environment variables in a cronjob? I have a cronjob which should start a script every minute on my Ubuntu machine: * * * * * /home/user/myscript.sh; In this script I ...
0
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1answer
225 views

Errors when running cron: grandchild #10010 failed with exit status 2: 1 Time(s)

In recent weeks I have seen this type of error many times on my debian 6 servers. I have seen different exit status, 1, 2, 25, 255 Errors when running cron: grandchild #10010 failed with exit ...
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2answers
38 views

Symlink in crontab, script not found [duplicate]

I'm running Debian testing and can't get a simple cron to run a symlinked PHP script. I've a php script in a subdirectory in my home folder /home/foobar/dir/script.php (which starts with the ...
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1answer
23 views

Debian: environment variable not available for script running from cron?

I have this line: echo $(date '+%Y %b %d %H:%m') Your output $HOSTNAME When I do it manually from command line I can see my $HOSTNAME just fine. However, when it's running from a script that's run ...
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1answer
42 views

Impossible to add a script to cron [closed]

I am trying to add a script to cron jobs to be played daily. I tried multiple things but no one seems to work. First I tried to add a script in cron.daily: It s not triggered. #!/bin/sh cd ~/foo/ ...
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1answer
56 views

cronjob executing mysql and get root access denied

cron job file: 46 13 * * * root /home/tmp/test_mysql.sh script: execute_query(){ query="$1" res=`mysql --skip-column-names -e "$query"` echo "$res" } res=`execute_query "show ...
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63 views

crontab at reboot for EC2 instance

I'm trying to mount an EBS volume after restart. It does not work. I set the mount after reboot, in the following manner: echo "@reboot 'sudo mount $DEVICE_PATH $TARGET_PATH -O noatime,noexec'" | ...
3
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3answers
559 views

Why cd does not change current directory in crontab?

In my user's crontab, on a CentOS system, I have something like this: 58 12 * * * cd /home/joe/dev; echo `pwd` | logger This outputs in /var/log/messages: Feb 19 12:58:01 srv01 joe: /home/joe ...
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1answer
53 views

crontab grep function execution [duplicate]

When I tried exection grep function in particular directory its working on that directory but when I am trying to execute using absolute paths grep is not working for example grep `date +%Y-%m-%d` ...
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1answer
70 views

CSF not adding IPs to deny file as a cron during high loads

I'm running a cron every minute to thwart brute-force attacks. awk '{print $2}' < ipkill.txt | while read ip; do #query geographical info IP address curl -o country.txt ipinfo.io/$ip ...
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3answers
320 views

Using nice scheduling priority with tar/gzip cron script

I do large backups that put huge strains on my server when using tar/gzip. I've got the task setup as a cronjob which accesses my script that handles the backup. I know that nice might be able to ...
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2answers
50 views

Cron job ignores part of trigger url

I created a cron job to trigger a url at set times, which in turn starts a product import script. But for some reason part of the trigger url with parameters is stripped away. I set the cron job like ...
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2answers
182 views

/etc/crontab file not executed

I created a dummy entry in /etc/crontab, but it doesn't get executed according to cron log /var/log/cron: Feb 7 08:20:01 localhost CROND[22781]: (root) CMD (/usr/lib64/sa/sa1 1 1) Feb 7 08:30:01 ...
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1answer
367 views

Cron job is not working in centos 6.6

I have dedicated server having centos 6.6 and centos webpanel. Now I'm trying to set cron job from centos web panel. I had tried so many commands to run one php file each and every minute, but still ...
3
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1answer
365 views

Cron job as root need to sudo to another user [duplicate]

RHEL6 In root's crontab a have: * 21 * * * /root/script.sh In script.sh there is a line: /usr/bin/sudo -u jira bash -c 'cd /opt/jira/bin; ./stop-jira.sh' && echo "Jira Shut Down" >> ...
6
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1answer
990 views

amavis cronjob throwing an error out of nowhere

Can someone explain why amavis cronjob is suddenly trowing the following error? Cron <amavis@bee> test -e /usr/sbin/amavisd-new-cronjob && /usr/sbin/amavisd-new-cronjob sa-sync rules: ...
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28 views

why is cron flooding wtmp and last?

When I type the last command, I see a bunch of entries in there for cron. Every single cron job that gets run creates an entry and it's flooding wtmp with unnecessary entries. Any ideas how I can stop ...
0
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1answer
46 views

How to use .profile alias in crontab [duplicate]

I've read the answers to this question, but still don't understand what to do: How to use my aliases in my crontab? I am logged onto my Ubuntu server as root. I have the following command in my ...
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42 views

Using placeholders or environment variables in sudoers

Is it possible to use in sudoers rules any kind of placeholders (not just wildcards) or environment variables? What I would like to do is to verify that user (the one sudoing a command) passes as an ...
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2answers
301 views

Crontab: Authentication token expired; new one is required

I have a crontab job running daily as a non-root user job. Unfortunately it did stop working with the following message (in /var/log/syslog): CRON[29256]: Authentication token is no longer valid; new ...
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1answer
55 views

Kill old php cron script

After running ps aux | grep php, I found about 10 php scripts ran by cron that have started over a week ago and are hanging. Each script usually take 40 seconds to complete. I have set ...
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2answers
65 views

Creating a log file inside a script works when manually run, but not when run through cron

I'm using Percona's Xtrabackup tools to back up a database nightly. I wrote a wrapper script to keep the proper number of backups around, write the output to a log file, and email the log file if the ...