Cron is used to execute scheduled commands. It acts as a task scheduler on Linux and UNIX systems which will execute commands at specified times set by the user. Cron has a great deal of customization and is often used on server environments where common tasks are run on a regular basis.

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291 views

unattended-upgrades error: “/etc/cron.daily/apt: DB Update failed, database locked”

Ubuntu 14.04.1 LTS Since installing unattended-upgrades, the following error message is received daily: From root@xxxxx Thu Aug 28 06:36:06 2014 X-Original-To: root From: root@xxxxx (Cron Daemon) ...
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51 views

Running Chrome extension periodically using a cronjob

I have built a chrome extension that performs a set of actions on a random webpage. The extension seems to work fine and I plan to run it on a VPS running Ubuntu with a XFCE desktop environment. Now ...
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122 views

Tiger: `rtm` is listening on socket XXXX

On my Ubuntu serve 12.04 LTS, Tiger is reporting a lot of stuffs like this: OLD: --WARN-- [lin002i] The process `rtm' is listening on socket 60404 (UDP) on every interface. NEW: --WARN-- [lin002i] ...
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63 views

Can I set up a cron job on Ubuntu Phone

I've been looking around, and can't find if Ubuntu Touch can run cron. So my question is: Can it? Also does it have a standard set of bash utils installed?
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136 views

Need to setup email notification when system starts and shutdown

I would like to have the system send me a email notification everrytime the system starts or shuts down. I am currently running Ubuntu 12.10 I found this tutorial but I couldn't make it to work.
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663 views

Why doesn't duply work when set as a cron job?

I have a problem with a cron job which starts but doesn't complete. Running the command manually works fine. I already read the page about cron issues and solutions here on AskUbuntu, tried the ...
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143 views

Crontab not executing script with cURL

I have a cron that's set to run every ten minutes that works fine if I execute the file manually by entering php register.php But, my cron will not execute this file once it includes anything cURL ...
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59 views

Cron, xconf-query and Xubuntu 14.04

I have updated my Xubuntu to the 14.04 version. Unfortunately, I am experiencing a problem. I have a script, named earth, updating the wallpaper of my desktop. Here is the code #!/bin/sh nice -n 19 ...
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127 views

Which tasks in “Scheduled Tasks” (gnome-schedule) use anacron versus cron?

I am trying to run a command once a day, but my machine is not always on. anacron says it's meant for such purposes, but I prefer to use the Gnome Scheduled Tasks GUI program. If I schedule a task to ...
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53 views

syslog time is not matching cron string setup

I am running many cronjobs in my server. When I was checking the syslog file to see the cron timing, it's completely not matching. Can someone help me to understand. syslog May 23 00:00:01 xxxxxx ...
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208 views

Allow user to run programs as root without password. Would it be the correct solution to my problem?

I have a server which I need to be running certain programs permanently; I'm having problems with two of them and I'm not sure if the solution I've found would be the correct one, so I ask for opinion ...
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185 views

xprintidle doesn't work in cronjob. Why?

I have lxle (Lubuntu) 12.04 installed and I spent lots of time looking for working solution to make PC shutdown after some period of idle state. After checking many programs which haven't worked I ...
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23 views

Any reason why Ubuntu's man page on crontab(5) is less informative?

Why is the man page for crontab(5) at manpages.ubuntu.com less informative than corresponding man page at linux.die.net? Compare The "sixth" field (the rest of the line) specifies the command to ...
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316 views

Cronjob for MySQL Backup Bash Script Not Running

I am trying to backup many MySQL Databases on a daily basis into a Single ZIP. The bash script works fine by itself (ran in normal environment), but when the Cronjob takes over it does not run. Infact ...
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50 views

Make CronTab not asking for id_rsa keyword when running in terminal

I like to do some git pull inside a script and see see output of it. So I made up this cronjob to test: DISPLAY=:0 * * * * * mike /usr/bin/gnome-terminal -x zsh -c "/var/www/up.sh; zsh" ...
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127 views

Configuring logrotate without root access (per user log rotation)

How best can logrotate be configured, on a per-user basis, to rotate files in the home directory of the user, under control of a per-user 'crontab -e'?
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84 views

Using a NAS as a collective dump, with symlinks for whoever uploaded each file

I have a local machine that was sitting around & doing very little, so I decided to turn it into a NAS (Network Attached Storage) machine, with a 40GB disk for Ubuntu (13.10), a 160GB disk that's ...
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129 views

Why won't cron run my sh script?

Used gnome-schedule to create a script to set my headset as the fallback audio device because it keeps unsetting it when the headset gets disconnected or pc goes into sleep mode. Anyway, crontab is ...
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599 views

Ubuntu 12.04: Crontab stopped running/Curl and cron blocking?

I have created a number of PHP daemons in the past and my general procedure is this: Run a cron job every minute to start up a new instance of the daemon Create a log file Check to see if enough ...
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133 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 ...
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38 views

crontab command in the 2nd line doesn't run

I have these 2 lines in cron tab. The 1st command executes but the 2nd one doesn't. It just doesn't run. No traces in log. I have a new line (enter) at the end. I have restarted the cron service ...
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73 views

Backup regimen - is this plan any good?

I have a desktop that has some valuable personal and financial records, photos, etc. I installed a second drive formatted ext3 called 'internalbackup'. I've been using a variety of backup programs, ...
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66 views

Why are alerts still coming if a job is commented out in cron?

In cron entry I have disabled the ignite recovery tape backup. But still we are getting alerts as: The action /opt/osit/omniback/bin/check_make_recovery.pl failed Crontab entry : # Ignite ...
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179 views

How to trigger anacron start if USB drive connected

There is a script in /usr/lib/pm-utils/power.d/anacron which restarts anacron if leptops are connected to power. Is it possible to have a similar script restart anacron if (a certain) USB-drive is ...
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23 views

crontab sometimes doesnt work

I am trying to execute a script via crontab but some scripts work, while other do not. Why does this happen? username@here> crontab -l 00 13 * * * csh -c /home/apps/bin/jobnumberone.pl 00 18 * * * ...
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15 views

@reboot in crontab could increase the startup time?

I have a script that updates my ip address in the DNS server. Sometimes this script takes 3 or 4 secs to run. I want to know if the script execution time could increase the total startup time of my ...
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17 views

Need help fixing my cron job

I just recently installed Tiny Tiny RSS. I followed the instructions from here to set up the cron job. I did this to add my cron job: sudo crontab -e This edited the /tmp/crontab.PkFSFo/crontab ...
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21 views

Configure when unattended-upgrades should reboot

I've set up unattended-upgrades and configured it to reboot at 3:00. Upgrades itself are installed after 4:10 so I have about one day before an upgrade will cause a reboot. Last install was this ...
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47 views

tracking down possible file system corruption issue with f2fs

I am investigating a potential file system corruption issue running f2fs on an ARM 7 device with an Linux 3.12/ Ubuntu 14.04 stack on top. So, the symptoms of the issues are as follows: The ubuntu ...
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19 views

I have lost the visual Cron manager from webmin

I don't know if this was an effect of the shellshock attack which my server was victim to (or another attack that worked) but it basically enabled the hacker to overwrite my SSH config file when the ...
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12 views

cron job to run google-musicmanager and have its indicator showing up in the menu bar

For some reasons, I need to periodically run a script with cron in order to start Google Music Manager (and to perform some music folders/files and config management stuff, which pose no problem). ...
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27 views

User specific cronjob

I need a user specific cronjob on my ubunt 14.04 server. But if I enter crontab -e as the user, vi opens and I can see /tmp/crontab.Lb3Khc/crontab" [Permission Denied] I have already created a ...
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12 views

incron tab won't fire

I'm trying to get incrontab running, but it won't work. This is the error I get: access denied on ~/propt/apo/feeds - events will be discarded silently and this is the line in incrontab I want to ...
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39 views

How to configure cron

I´m very confused trying configuring cron. I have a file named "crontab" in "/etc/crontab" which I edited to show (I want a daily task at 2:00 AM) As it claims is the "system wide crontab" # ...
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18 views

CRON @reboot vncserver?

Is there any reason per-user cronjobs running vncserver @reboot wouldn't run? When I reboot the machine and look into /var/log/syslog, I see the jobs being run, then cron saying (CRON) info (No MTA ...
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38 views

Crontab wont run this script!

I am trying to run this script as a cron job to enable a weekly back up of my mediawiki site. Running on Ubuntu server 14.04. It simply will not run. The scipt is running from the root folder of the ...
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21 views

reprepro - Is there any chance to enter the passphrase via bash-script?

I use "reprepro" for getting the latest Debian packages out of my local repository, which works fine manually. Now I need to automate this process through a cron job but the reprepro passphrase is a ...
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26 views

munin send mail about permission denied to munin-update.log

I have install munin, but CRON send me mail about an error: Can't open /var/log/munin/munin-update.log (Permission denied) at /usr/share/perl5/Log/Log4perl/Appender/File.pm line 103. but the ...
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26 views

Backup database with mysqldump

Hello i use mysqldump with crontab for save my database each hour but after one day i have 24 files What is solution for auto delete if more 5 files ? And what is chmod for folder backup for security ...
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14 views

rsync never terminates and makes Tb size snapshot directories

I have a cron job that runs rsync every day to download data from a server. It was working fine until the space allocated for me in the server was changed (probably increased). It happened as I was a ...
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31 views

Run cron job to execute a script when a particular file is updated

I would like to automate a process which requires running a script to generate some files. To do this I thought that adding a cron job to run this script would be great. But I want cron to run the ...
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20 views

Many CRONs processes

My system from couple days have some strange issues. Main thing is that I can't ssh for most of my day. I noticed that is connected with amount of CRON porcesses. In crontab I have about 90 records ...
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43 views

pmcmd not working with Ubuntu crontab or gnome-schedule

I have scheduled a shellscript which interns calls an informatica workflow with PMCMD command. when the script executed manually, it is starting the workflow properly but when the workflow is ...
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0answers
73 views

Scheduled Cron Back up from EC2 to S3

I have created a script for scheduling sql back ups and store in Amazon S3. Below is the script that I used for taking backups. DATABASES="testdb" testdb_USER=root testdb_PW=root ...
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56 views

crontab and running nmcli in a script

I am trying to come up with some way of making a persistent VPN connection, so if it drops (as it does from time to time) the connection will be remade. I though using crontab would be the best way to ...
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31 views

Auto Update Even When Laptop Lid Is Closed

I am trying to follow this guide for auto updating Ubuntu. I am using the Advanced Aptitude option. My problem is that I am trying to do it on a laptop and cron doesn't work when the lid is shut. I ...
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23 views

truecrypt in bash script called with crontab

I have a bash script that uses truecrypt to mount a volumn. The command is the following: RESULT=$(truecrypt $FILE 2>&1); When I execute the script with bash script.sh I receive the ...
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36 views

Configure cron to include FQDN in email

We have machines named like so: serverA.subdomainA.TLD.co serverA.subdomainB.TLD.co Works fine for us, except when I get an email from cron, the messages looks like: From: root@tld.com ...
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37 views

Reg: Cron job is not running

I have set my cron jobs in linux ubuntu. Cron is not running and even already set my mail id to test whether cron is working or not.Its not luck for me. How to fix this issue.
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33 views

Teradata BTEQ on ubuntu

I am trying to set up a cron job server utilizing BTEQ to run our daily builds. I installed pretty much everything I could find on the TD developers site via alien as the packages are rpm, but I didnt ...