General :: Crontab Shutdown Not Working?
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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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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Jun 11, 2009
I am practicing on "crontab" and am able to get system status in time but I want to shut my system through crontab.#15 12 11 06 thu init 0
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Jul 29, 2010
how to schedule shutdown every day using crontab
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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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Jul 22, 2011
After NFS mounting some system folders (i.e. lib, usr) of a slave cluster node to /lib & /usr located on the master cluster server I got into some problems: I forgot Ubuntu 10.04 was installed on this particular slave node, while the master node runs 9.10. Now, I am not able to unmount these folders using umount, or restart the system using shutdown, I get some error: " /lib/libblkid.so.1: version `BLKID_2.17' not found". Is there an alternative way to unmount these NFS shares, or to restart the system to undo the mounts? The systems are located elsewhere, so just physically restarting the system would not be the preferred option.
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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 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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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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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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Apr 22, 2010
I cannot locate shutdown log for Linux shutdown to check various activities carried out during shutdown. I can view Startup Log which is availble on console>Applications>System Tools>System Logs.
I have included Shutdown/Startup in dbora, so that Oracle 10gR2 Shutdown/Startup will be automated during OS Shutdown/Startup.
I want to check Shutdown log because Oracle Shutdown was not running, as from $ORACLE_HOME/shutdown.log contains no entries, where as startup log contains latest startup details.
That means here 2 issues are there. One, I want to locate OS Shutdown Log and the other being Why Oracle Shutdown not getting executed.
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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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Oct 4, 2010
I am listing both problems on one post because what I have read, they may be related. I am working on a Compaq Presario SR1603WM. I have installed 10.04 three times thinking I may have gotten a poor install. The computer has two issues and everything else appears to be working properly. The main problem is that the USB's aren't detected. There are 4 on the back and three on the front. They have power, but the computer doesn't detect when a drive is inserted. The card reader does not work either. The second problem is that when you shutdown the computer, it hangs on the "purple Ubuntu" screen until you press and hold the power button. Restart works just fine.
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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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Mar 2, 2011
I installed plymouth theme "spacefun" on Debian Squeeze. It working nicely on booting. But not working on shutdown.
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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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Mar 5, 2010
I am using Ktorrent 3.3.4 (compiled - using KDE 4.3.2) on Ubuntu version 9.10 (Ubuntu 2.6.31-19-generic)
I have tested the shutdown plugin to shutdown when all torrents stop downloading and also tested by selecting when events below happen and manually selecting the torrents.
I have the shutdown button selected.
However on both occasions my PC does not shutdown after the downloads have completed.
What am I doing wrong? Or is it because I am on Ubuntu and using the Gnome desktop and this only works for KDE?
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Aug 28, 2010
I'm trying to make my system automatically shutdown once the battery level is low, but still without success. I've tried kpowersave, gnome-power-manager, kpower, klaptop but none of these worked for me. Well, I can't imagine I would be that stupid, but simply it doesn't work. In all cases mentioned above (kpower, klaptop, gnome-power-manager) I've tried to setup the laptop to shutdown once the defined level is reached, but the laptop never actually switched off unless all the battery was drained.
Btw. I think all the above mentioned apps only work once the user is logged in. But I'd like the solution to work also when the PC is on without anyone logged in. I thought I could write a bash script based on parsing of acpitools output and define it as a service, which would monitor the battery level, but I simply don't believe there isn't any functional solution to this.
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Jan 5, 2010
If I configure a crontab like below.12 3 12 4 4 cat /etc/passwd I know that the cat command will get executed at the configured time. But where will the output of that command go?If it is something like below, then out put will be routed to /tmp/file1.12 3 12 4 4 cat /etc/passwd > /tmp/file1
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Jun 1, 2010
I setup a cron job to trigger a script that I wrote every morning at 12:00 AM, but it does not seem to be working.
This is how I edit the job using crontab -e
Why it isn't triggering at 12:00 am every night. If I run the script manually it works just fine so I know is not the script causing troubles.
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Apr 10, 2011
I know crontab -e sets a cronjob in /var/spool/cron but how do I set a cronjob to run from /etc/crontab? Is there a command used for this or would I have to manually edit a certain file?
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Dec 5, 2010
I want to set up a crontab so that from my machine {which is 192.168.0.99}whatever I create in a directory called "/information" {suppose some texts files}will be copied to 192.168.0.100 and 192.168.0.101's machine "/readinfo" directory at 5.30 pm. everyday."/readinfo" is directory which is accessible by all users on that machines {192.168.0.100 & 192.168.0.101}is this crontab right?30 5 * * * /bin/cp -rf /information/* 192.168.0.100:/readinfo30 5 * * * /bin/cp -rf /information/* 192.168.0.101:/readinfoI guess first these 100 and 101 machines should allow me {99} ssh connection without passowrd.
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Dec 10, 2010
I have installed a cluster computer with 10 nodes . The manufacturer is HP . All nodes and the master node have redhat enterprise linux installed in them . When I shutdown the nodes from the master terminal using "shutdown -h now" they get shutdown . But they dont get completely turned off . This issue bothers me when the power supply is given , all nodes boot up simultaneously generating a huge heat .
Thing to note : When we shutdown our PC they get completely turned off . When the power supply is given , a press on the Power On button is required to boot the system. But , why does it not happpen in the case of cluster? Is there any other way of completely turning off the nodes from the master terminal ?
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Sep 27, 2010
i'm using Ubuntu in my office. I have to report two issues with network connectivity.1. Wireless doesn't work if come back after suspend/hibernate the computer. The work around I follow is,a. Turnoff the wifi and restart the computer. (It won't shutdown. have to do force using the power button)b. Reinstall the network-manager_0.8-0ubuntu3_amd64.deb and network-manager-gnome_0.8-0ubuntu3_amd64.debc. Restart the computer (Again it won't shutdown. Need force.)d. Now wifi will detect the networks and shutdown works fine hereafter.2. Sometimes the wired gets disconnect frequently (thrice in 2minutes). Physical connectivity is good and working well in Windows.
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Oct 20, 2010
My laptop's clock (Acer Extensa 5220) seems to be slow. I've corrected it 5 minutes forward last week and now have just corrected minute forward again. Is there a program [apart from time servers] to correct clock properly, for example, by shifting it a bit every hour? Is there already a program to put it to crontab or I should hack up a script? Or I should check more things?
I have found that HW clock is right, but system time is slow: about a second each 2.1 hours.
root@vi-notebook:~# dmesg | egrep 'clock|unstable'
[ 0.103785] Switching to clocksource tsc
[ 0.265274] Marking TSC unstable due to TSC halts in idle
[ 0.265514] Switching to clocksource acpi_pm
[ 1.321408] rtc_cmos 00:09: setting system clock to 2010-10-30 00:10:48 UTC (1288397448)
Is placing "hwlock --hctosys" to crontab a right thing?
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Nov 1, 2010
Im new to linux, using ubuntu 10.04. I have been playing around with crontab and have no problems scheduling a job which runs a script file containing the following command:
However, when I try to do the following in the script file nothing happens..
Similarly the following doesnt do anything either:
Is there something im missing?
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Sep 20, 2010
Silly question here. My crontab looks like this:
Quote:
0 22 * * * /usr/sbin/logrotate /var/log/VRTSralus/VRTSralus.logrotate
#0-59/10 * * * * /root/memmon.sh >> /var/log/memmon.txt
0 8 * * 1 /root/SHC.sh
#0 21 * * * /root/scripts/ralus_restart.sh > /dev/null 2>&1
As you can see two of the lines are commented out. However, both commented out commands are still running. I get emails stating that the RALUS agent restarted (another mystery since it's supposed to go to dev null according to the line above), and I can see that the memmon script is also running daily. Am I missing a step? Some other place I should be looking? Commenting out lines in your crontab is pretty much a no-brainer, so I appear to have less than no brain as this is a mystery to me.
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