Ubuntu :: Running Cron As Root?
Jun 25, 2011
I have an external usb hard drive that spins down every 10 min. The commands in 'hdparm' do nothing to override the internal settings. So, I wrote a script to touch a file every 5 minutes, and it will run as root because of the mount command, and I want it to run for every user. The script is executable, owned by root, and root is the group, with 755 permissions.
no_sleep.sh in /usr/sbin:
Code:
#!/bin/bash
# Script to keep external drive from spinning down
diskmounted=$(mount | grep Backup | wc -c)
[Code]....
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Feb 16, 2010
I have set up a cron in /var/spool/cron/root
*/15 * * * * /usr/bin/phplist.sh
I can see in /var/log/cron that it is running every 15 minutes but it has no effect. It is not doing the commands in the bash script.
If I run /usr/bin/phplist.sh right in the shell it works great.
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Feb 9, 2011
Is my vixie-cron broken? i have "0-59 * * * * root /usr/sbin/logrotate /etc/logrotate.conf" but it is not running in /etc/cron.d.
Code:
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Jun 1, 2010
My root Vixie cron crontab is set to perform a system snapshot via fsarchiver: 0 0 * * * fsarchiver savefs -o -A /backups/p30_root.fsa /dev/sda2 /dev/sda3 The command itself works fine, generating about a 7G snapshot of my Suse server. I then wish to rsync this to a NAS I have located in another building: 0 3 * * * rsync -av -e ssh --delete /backups/ root{at address}:/DataVolume/os_backups/
(yes, I'm rsyncing as root. I absolutely loathe it, but I got thrown into an quasi-SA position with a ridiculous to-do list and no time to do it. I'm having to make things just work and then go back and try to improve them/learn how. I couldn't make it work in a non-root way quick enough, so for now I'm having to cron rsync jobs as root because of all the differing file permissions on this samba/MySql server. I set the NAS to only accepts ssh from the server IP, and we're behind a campus firewall... It's serious trial by fire.) The crontab also has rsync commands for the samba areas, our specialized chemistry software and affiliated MySQL databases............
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Jan 6, 2010
why my second cron job isn't running? The first one runs fine but the second one does not run at all. If I manually run the script using ./check.sh then it does what it is supposed to but will not run from cron. It should run every weekday at 9:45am, it looks good to me but clearly I am doing something wrong.
Code:
# m h dom mon dow command
#This will backup my hosted websites.
0 2 * * * /home/bob/scripts/websitebakscript.sh
#This will run check and upload it's contents to the net.
45 9 * * 1,2,3,4,5 /home/bob/scripts/check.sh
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Oct 25, 2010
Cron refuses to work for a newbie.I am trying to setup a cron job to backup a folder in my home directory ('/home/scratch') to a folder ('home/internet_backup') that is mounted (using nfs) to a network folder.the folder ('home/internet_backup') is mounted correctly to the network folder upon system startup, so this part works.
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Nov 5, 2010
I am making a webpage which is to be automatically generated every minute. I've created a cron job in crontab like this:
Code:
0-59 * * * * /usr/bin/php /var/www/site/updatestatistics.php > /dev/null
When I refresh the page 'updatestatistics.php' in my webbrowser it does generate a new page ('statistics.html', which is included in 'statistics.php'). But when I let this cron job do the job, nothing happens. I looked into the log file, it shows this:
Code:
(root) CMD (/usr/bin/php /var/www/site/updatestatistics.php > /dev/null)
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Apr 3, 2011
After saving a few sample scripts in crontab, I discovered that cron is not running properly on my Ubuntu 9.10 (32 bit), after a recent reinstallation. Please note that the files "/var/log/cron" and "/etc/defaults/rc.conf" are empty in my system.
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Jan 28, 2010
Cron for root does not run,it's 8.04LTS ubuntu server,however Cron runs for other users,Can anyone help?i've checked many times that i have the right syntax.
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Mar 3, 2010
I have a cron job set up to backup my ~/ directory everyday at 10:00. But the cron job is not running. here is my confile that I loaded into crontab...
Code:
#backup everyday @ 10:00 AM and 10:30 AM
00 10 * * * /home/dave/bin/backup.sh
30 10 * * * /home/dave/bin/music_backup.sh
[code]....
the *.sh are executable. I logged out and logged back in since I put the cronfile in crontab. The commands that I use in the *.sh files work fine when I run them manually.
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Mar 25, 2010
I seem to be having a problem with cron. I have a python program that checks a specific directory for pending email scripts written in python.
Code:
#!/usr/bin/python
import os
emaildir = os.environ['HOME']+"/email/"
filelist = os.listdir(emaildir)
for pyfile in filelist:
if pyfile.find(".py") > -1:
execfile(emaildir+pyfile)
This code has been tested and works fine. The problem is that I need cron to run this code every 5 minutes but i can't tell if it is running: Here is my cron code:
5 * * * * /home/username/custom/CheckEmail.py >>/home/username/custom/email.log 2>&1
I activated the log (I think) but all i get is /var/log/cron.log and that only logs when I activate/deactivate or edit the cron file. is there anything else i need to set for this to work? I am running Ubuntu 9.10.
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Mar 1, 2011
I still can't figure out why my cron job isn't working. I'm sure I'm missing something obvious, but it's got me beat
I know cron is executing my script (I had it echo some lines to a file at points within the script, and that text showed up, but none of the files/folders are being copied or removed)
crontab looks like this:
Code:
PATH=/usr/sbin:/usr/bin:/sbin/bin
#m h dom mon dow command
*/20 * * * * /scripts/scriptname
[Code].....
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Jun 2, 2011
I have a cron job that executes fine in opensuse 11.4. It is located in
/etc/cron.d/publish.cron:
jpablo /srv/django-apps/smcommand/scripts/publish.sh
It is correct, I want it to execute every minute. Now, I copied the same script to ubuntu maverick, and it doesn't run. Perhaps there's some ubuntu peculiarity that I'm not aware of?
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Feb 10, 2010
I am unable to run my cron tab job without root password.I made a little research on the forums and appearantly it should be changed.Must I change "passwd" part with my root password?
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Sep 22, 2010
I have two users in my system. Admin(Root) , and "student". I am making a bootable USB with Ubuntu 10.04 with two partitions. What i need is a cron-job who copies some files that the student has made(from the first partition) onto a partition which he is not allowed to access. The way i thought it should be done was making a root cron-job which mounts the drive and then copies the documents, and maybe unmounts it again.
The problem with this is that, when i mount it, wouldnt it be accessible to the "student" as well then? Since i give him sudo-rights and mounts the drive in the background for him? Alternatively i could unount it straight after the copying is done, but then it would do this too often I guess.
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Mar 16, 2010
For some reason my cron jobs are not running and I can't seem to figure out why.
Here is crontab -l
Code:
SHELL=/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
[code]...
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May 10, 2010
I use crontab for a daily alarm clock, which stopped working after I moved to Lucid.
Code:
$ crontab -l
# m h dom mon dow command
[code]...
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Jun 2, 2011
I am running Ubuntu 10.10 on a new Dell PowerEdge.
I built the system ~2 months ago and have successfully been running a list of cronjobs.
The jobs last ran on 5/31/11 at 7:35am. Since then none of the jobs have run.
I see "cron" in the process list when I run ps.
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Oct 22, 2010
I am still an openSUSE noob and have been struggeling to get cron jobs running for the past couple of hours...without having success Hopefully a more experienced user can give me a hand As root I used crontab to setup some cron jobs:
Code:
crontab -u api-cebian -e
The resulting cronjob looks like this:
[code]....
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Jan 31, 2010
I want to make a cron job for my webserver, only it seems not to work...
I have now the followig to test (every 16th minute of the hour, write test to a file), but it doesn't show up. When I write out the cron, it is done to the file: /tmp/crontab.QXsBIO/crontab . How to make cron work? It must be very easy, but I have real troubles getting it fired up.
My Linux version is debian lenny and the cron file looks like (crontab -e):
(with trailing empty line at the end)
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Jun 15, 2011
Cron on one of my boxes isn't running and I failed to determine why.
Here are what I have found so far:
Password:
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Jan 7, 2010
I have created a conjob via ssh by going to crontab -e and adding my scripts like 05 10 * * * /scripts/old-files-delete.sh.The file has 755 permissions and if I run the script manualy it works fine. I have checked the cron log and it does not show up as running at all.
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Nov 21, 2010
I am trying to run rsnapshot from cron via root's crontab file (crontab -e). If I run rsnapshot from the command line with sudo it works perfectly, however, if I run it from cron:
Code:
* * * * * /usr/bin/rsnapshot hourly >/tmp/crontab.out 2>/tmp/crontab.err
This does not work. The crontab.err file shows:
[Code]....
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Jul 31, 2010
I'm not sure if this behavior is Ubuntu specific, but I thought this might be a good place to start. I'm currently running Karmic, though again I don't think it matters. I'm trying to get some experience with cron, since it seems like a handy thing to know. Putting together a script to play some chimes seemed like a simple way to do that. I've since fallen into (and crawled out of) a bunch of pitfalls, and will never make assumptions about the running environment again! Whatever I do, I can't seem to get cron to wait for mplayer to finish while it's running the script.
Here's what I've got:
Code:
#! /bin/bash
### depends on: libnotify-bin mplayer
### DISPLAY=:0.0 must be in crontab
TIME=$(date +'%R, %a %e %b')
#MIN=$(date +'%M')
#HR=$(date +'%I')
MIN=00
HR=12 .....
And since more than half of the script is debugging, it'd be helpful to see the output. You'll notice I've set it to always ring noon, which is the worst case scenario. Here's what I get when I run it from the terminal:
Code:
Time set to 12:00
Tolling: toll43, toll47, toll50, toll53, toll56, toll59, toll02, toll05, toll08, toll11, toll14, toll.
Run at 12:45, Sat 31 Jul, manually
End at Sat Jul 31 12:46:21 CDT 2010.
Nice 2.5 second pauses while it waits for mplayer to play the chime. Takes about a minute.
Here's what cron puts out:
Code:
Time set to 12:00
Tolling: toll06, toll06, toll06, toll06, toll06, toll06, toll06, toll06, toll06, toll06, toll06, toll.
Run at 12:45, Sat 31 Jul, from cron
End at Sat Jul 31 12:45:06 CDT 2010.
The whole thing is done in 6 seconds! Now, I know that it is able to invoke mplayer and find the audio files, because I get about 4 seconds of sound. For some reason, though, it doesn't wait to finish playing each file before moving on. You can see where I initially though adding a sleep command would help, I've also tried adding nohup to the crontab and the case statements, and I've tried adding '& echo "foo"' to the case statements.
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Mar 28, 2011
I was just curious if cron had to be enabled before use. i have a crontab, and the cron daemon is running, but the command isn't executing...
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Jan 20, 2011
want to run VirtualBox with root permissions. Trouble is that only when run as root i can access attached USB devices inside of a virtual machine, otherwise, these a greyed out).Now running VirtualBox as a root user also changes the configuration folders, making all my virtual machines already defined disappear. I also don't want to copy all to the root configuration folders. Is there a way to give the VirtualBox root permissions but without actually running the application as a root user. Is it possible to do without changing the permissions of the non-root user, i.e. i don't want my user to have all root permissions, due to security considerations.
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Feb 10, 2011
Is there a way for me to tell cron to run an app BUT not run it if a process exist already?
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Oct 15, 2009
I have 3 cronjobs set up on my Unix server . Out of which 2 cron jobs run the same script but at different times and the other one runs another script.
So in the 2 jobs which are set to run PMDaily.sh for eg , One runs on Sunday at 8AM and the other runs monday to friday at 6 AM . How ever the Sunday cronjob works (runs through the crontab) but the Cron job set for Monday to Friday is not working. However manually if i run this script it workd perfectly.
Please let me know what could be the possible reasons for this?
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Jul 21, 2010
I have a script in /root/new.sh .how can i run this script with cron? "how to give path to script?"
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Aug 25, 2010
I am executing the script.
with help of cron job but it is not executing in cron job.
i check owner and chmod and create the file and execute manually it is working fine but in cron job i set below
Crontab -e
8 14 * * * /home/tplinux/webapp/tpadminhost/collect_ejxml/ejrename.sh
wq!
after that wait till that time but script is giving message no such file in directory but same thing is excute manually it is running fine and found the files.
Below is my script details
file name ejrename.sh. code...
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