Debian :: Cannot Get Crontab Working?
Aug 6, 2010
No matter what I try I just cant get cron working for me on my Squeeze setup I can type /usr/bin/soffice and openoffice will fire up no problem but put into a crontab and nothing for instance just to test if crontab is working I have this/5 * * * * /usr/bin/sofficeIn y user crontab but nothing happens I have run as root crontab -u djt crontab And after editing the crontab with crontab -e it says it is installing crontab but it just does nothing Unfortunately I am connected to my works network so unable to receive internal mail from cron so cant find any reason for it not working
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Apr 27, 2010
I am using Linux 64 bit Redhat Linux. I am trying to setup simple crontab as follow...1. Edited crontab file using crontab -e2. Listed the file once to verify it using crontab -l. This will display as.. 18 5 * * 2-3 ksh $HOME/testScript.sh > $HOME/testscript.out3. Logged in a root and restarted cron deamon using "/etc/init.d/crond restart"As per my understanding now my testScript should start running at 5:18 am Thuesday
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Apr 20, 2010
Have just started to use look at crontab. I could use Scheduled Tasks as well as crontab -e in terminal.
I must have changed something because now Scheduled Tasks just seems to load then dropout. Loading a task through terminal is accepten (crontab -e) but doesn't work.
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Jan 2, 2010
I'm running Ubuntu server 8.04.3 with eBox on a Dell GX280. I want to power off my box automatically every night, so as root I added a crontab entry "05 1 * * * /sbin/shutdown -P now". The command runs on schedule but most days the PC goes into a coma instead of powering off. It doesn't respond to key presses or mouse movement or Ctrl-Alt-Delete, I have to push its power button to complete the shutdown. I have tried a variety of alternatives such as "/sbin/shutdown -h" and "runlevel 0", they all behave the same way
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Jun 17, 2009
I'm setting up a new server and have edited the crontab to a run a script but nothing is happening, is there anything I need to setup to get the crontab working?
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Apr 26, 2011
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# m h dom mon dow user command
[code]...
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Jun 23, 2011
is it possible disabling a crontab job without deleting the crontab description entry (by crontab -e)?I could also accept to change the entry itself. Now it's:0 0 * * 0-6 /home/me/cron/script.csh
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Jan 22, 2010
if I run mysqldump from crontab and error occurs, I would like to have email send to me (reporting that backup is not working).
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Aug 26, 2010
I have a question about using crontab with /etc/crontab...
I had a cron job that I needed to run as root. At the time I thought that sticking it in /etc/crontab would be a good idea. However, I used the crontab command to edit /etc/crontab, which I guess is not standard procedure? Specifically, I configured /etc/crontab as my local user's crontab (i.e. sudo crontab /etc/crontab) then added my cron job as I would a local user crontab (i.e. sudo crontab -e).
Originally, my cron job looked like this:
30 * * * * root /my/batch/script &> /dev/null
After adding the new cron job I started seeing errors. Something to the effect of "can't find command root" or something similar. So I removed the 'root' user definition from the cron job and the job started running fine. However, because this is /etc/crontab, there are other system related cron jobs that have been defined to run under the root account (e.g. "17 * * * * root cd / && run-parts --report /etc/cron.hourly" runs as root, etc.). So these pre-existing system cron jobs, which up until now have been running smoothly, are now generating "can't find command root" errors. But I think that the system cron jobs _are_ successfully being run someplace because logrotate seems to be working.
So what I _think_ is happening is that /etc/crontab is being run twice: once as the system crontab, and once as my sudoed local user's crontab. When I run crontab -l I see nothing, but when I run sudo crontab -l I can see the contents of /etc/crontab. I am reluctant to delete my sudoed local user's crontab, because then in the process I would be deleting the system crontab, and I do not know how I should restore the system crontab's contents. (I am still not sure as to the most appropriate way to edit the system crontab).
How can I get out of this mess? I want /etc/crontab to go back to the way it was before--running _once_ as the system crontab. As for my new cron job, I'm willing to reconfigure it anywhere so long as I am still able to run it as root. Any ideas? (I am using Ubuntu 8.04 Server LTE)
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Apr 9, 2011
I have installed an application manager(monitoring application) on my linux server. Now, i need to have backup schedule for my application. The application itself has executive file to backup database.But when i put this file in my crontab to schedule the backup program it wont run!50 09 * * * root /opt/ME/AppManager9/bin/BackupMysqlDB.sh
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Jun 20, 2015
In my office there is a department where the access of internet & intranet is very limited. I've been given a task that I should add a script which would automatically take screenshots of the PCs. The script works fine, but I can't make it work with the cron jobs. There are many methods given on the internet to grab screen, but none of them works with cron.
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Jan 17, 2010
how to untar a file name /opt/Backup/abc.tar.gz2 periodically with crontab in debian. My Script name is abc.sh and i write it as
crontab -e
*/2 * * * * /bin/sh/ /opt/Bachup/abc.sh
while my abc.sh file is as under
#!/bin/sh
tar -xvf /opt/Backup/abc.tar.gz2
But it did not give any result. When i run it as sh abc.sh. it works succefully. but not in the crontab.
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Oct 10, 2014
This python script works , but not from crontab.Here is my python script:
#more datetimedir.py
import os, datetime;
datestring = datetime.datetime.now().strftime("%Y%m%d_%H%M%S");
print (datestring);
os.mkdir(datestring);
Here is how I call it from crontab
*/30 * * * * /usr/bin/python3 /home/cwc/logs/datetimedir.py
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Jun 16, 2010
I have created a small script to compile a network weathermap using the cacti RRD files. The script reads the *.conf files and outputs an html and a png file. When I manually run the script it works normally.
I have edited my crontab with the crontab -e command to run this script every minute
The problem is script itself works when I manually call it but when it is run using crontab it doesn't do anything. The cron.log shows that the script IS being run every minute with no errors but the files (html and png) do not get written. What am I doing wrong and how do troubleshoot this?
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Aug 17, 2010
As I have developed a part of my project based on crontab and now one of my team member has raised a question based on performance and load/stress, I would like to know the following limits of crontab.I assume each line in crontab file is a task; and also crontab would hold completed and pending tasks.1. How many tasks (both completed and pending) could crontab hold/handle?2. Will crontab run as expected if there are 100s of completed and less than 100 pending task?
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Feb 23, 2016
I got some crontab records and everything works fine. I installed mail server recently and all cron notifications started to come into my inbox. I'd like to receive only notifications about cron errors. I would rather not filter all notifications off.
lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.4 LTS
Release: 14.04
Codename: trusty
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Mar 3, 2011
I have been having trouble setting up a daily backup script with cron. It would basically never worked. Searched the net for answers but didn't find anything. I finally figured it out !! When root crontab is edited the execute flag is removed from #/var/spool/cron/crontabs/root. I change it with #chmod a+x /var/spool/cron/crontabs/root and all is good.
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Jul 21, 2011
I was trying to write a crontab entry using "crontab -e"
Code:
0 0 * * * cp /var/log/httpd/domains/mydomain.net.log
/home/admin/logs/mydomain.net.log
crontab is giving me this error:
Code:
"/tmp/crontab.XXXXfMOnRS":2: bad minute
errors in crontab file, can't install.
I've tried a dozen different values for the minute, but it's still giving me the same error.
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May 29, 2011
What is the difference between the crontab located in /etc/crontab and the crontab that can be edited using crontab -e?
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Sep 1, 2010
How to use crontab? i need to set crontab to execute a file every 1 minute
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Feb 1, 2010
I want to run a crontab job but it isnt working. I am writing in the crontab file with crontab -e Then I am waiting time but it isnt working. code...
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Apr 23, 2010
I installed debian etch on my system. Installation done successfully, but when it boots up the X server is not starting and showing error. Note : It is perfectly working with debian lenny. Configuration : Intel DG41RQ ,1GB Ram ,160GB HDD.
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Jan 10, 2010
Let me first start by introducing myself. I'm completely new to Linux. I've always argued Windows was better, even if I secretly thought not. Anyways the time has come to make the transition (I'm moving into computer forensics so I need to learn linux )
SO i'm trying to use crontab -e. I've installed gnome scheduler as I'm not comfortable editing in command line yet.
I've setup blackjack to start everyday at 23.30. The command line I've entered is /usr/games/blackjack and this works perfectly fine in command line.
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Jan 21, 2010
Edit: commands like Firefox works after I set it to display properly. I still can't get personal scripts to run, though.I can't seem to get crontab to run my commands. I add
Code:
* * * * * /home/username/script
but it doesn't seem to work. The script works itself in the shell
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Mar 2, 2010
I want to schedule a Java program to run at a certain time, which will open a GUI progress monitor while it runs, and then terminate when it's done. I can execute it fine from the command line, but I it doesn't seem to work when I schedule it with crontab. In fact, I can't make any gui by scheduling it, not even something like gedit or firefox.
I know it's pretty rare that someone would want to do this, but is there any way to schedule a GUI app?
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Jun 16, 2010
I'm having problems trying to restart gdm from crontab and I'm not sure what I'm doing wrong. Basically what I want to do is a 'logout' every morning before I get to work so that by the time I get to my computer I would just have to log back in and have a fresh gnome session.
The command I'm using to restart gdm is:
Code:
/usr/sbin/service gdm restart
If I run this command from a terminal as root it works.
To edit my crontab file I'm doing:
Code:
sudo crontab -u root -e
And adding the following line to it:
Code:
25 08 * * 1-5 /usr/sbin/service gdm restart
My understanding is that this should restart gdm every day of the work week (Mon-Fri) at 08:25. But for some reason this is not happening.
I also checked that my cron deamon is running by:
Code:
~$ service gdm status
gdm start/running, process 27156
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Aug 4, 2010
I have a .sh file which i want to run using crontab at a specific time with root privilege.
I put an entry in root's crontab as the following:
sh /home/vivek/ifconfig/college.sh
But, the file do not get executed at a given time.
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Aug 19, 2010
Figure out why this /etc/crontab won't run correctly?
Is it possible that it don't run because the cron deamon is not running? code...
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Feb 14, 2011
I'm currently trying to have crontab to automatically backup files from ramdisk. It works perfectly when I run it myself by simply cd:ing to scripts directory and type ./save_world.sh.
The problem is, that crontab DOES (at least it looks like it) run that command every one minute. /var/log/syslog does show it executing that line every one minute without any errors. I'm currently very confused what I did wrong here. I have tried rebooting, fiddling with crontab line, tried sudo crontab -e but nothing seems to work.
My script is called save_world.sh and it is located in /home/phoe/minecraft/rpg/
Code:
My crontab -e has one line and it is following:
Code:
I haven't determined any specific time yet, because I'm just trying to get it work first.
Snippet from /var/log/syslog:
Code:
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Sep 1, 2011
I am a xfce user. I have a list of wallpapers and I wanted to change them every 5 minutes Initially I was using a simple command in crontab entry to change it, Quote: */5 * * * * xfdesktop --reload it was working but it would crash xfdesktop process after few changes and the screen would be all grey. To solve this issues I wrote a simple script which would check if xfdesktop is alive and if yes it would call xfdesktop --reload else start xfdesktop I called this script idesktop & its path is ~/.bin/idesktop
[Code]....
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