Red Hat / Fedora :: No Crontab For Root?
Oct 28, 2010
I am setting my cron to work. I am in the roo account/ So first I type as vi crontab -e. Then it ask me type "visual" for normal mode and do that then I type the following as below 1 * * * * root usr/local/testClient/runClient.sh>/usr/local/testClient/cron1.log and press esc type wq. Then I restart the cron service /etc/init.d/crond stop and /etc/init.d/crond start. Lastly when I type crontab -l it tells me no crontab for root.
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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 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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Jul 16, 2010
I have set up my crontab and whilst Im logged in and it works (It runs my shell script), however when Im not logged in, the script does not run. Initially I set the time/date to 0 0 * * * (Midnight every day), as this did not work, I tested it with to 0 * * * * (every hour) whilst logged in and the script starts.
I use crontab -e to set it up under the root account..Im sure you dont have to be logged in for it to run?, but maybe im missing a step or just overdosing on Linux and need a holiday:-)
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Feb 3, 2011
I tried scheduling a task using crontab -e and added the line:
Code:
58 23 3 2 4 /usr/bin/freshclam --verbose --log=/home/EXISTING DIR where I have permissions
The timing was simply a test run. My syslog gives the following error:
Code:
(CRON) error (grandchild #4309 failed with exit status 62).
I also tried to add to root crontab as below, but got the same error.
Code:
sudo crontab -u root -e a
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Apr 15, 2009
When I setup crontab as a local user (settings shown below), then it can pop-up a xmessage windows * * * * * DISPLAY=:0.0 /usr/bin/xmessage -center "warning message here" but when I switch to root, and setup the same things in crontab, why it cannot pop-up a xmessage windows? Any special limitation for root to use crontab?
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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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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 10, 2009
I've just discovered that crontab is creating a new file in the root directory every time it executes a cronjob, and it doesn't erase over the old file so there are thousands of files in the root directory, they have the same name as the script file (appended with a numeral) but are all blank.here is what one of the cronjob's looks like[URL]
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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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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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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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Jul 26, 2010
I have a problem using crontab. I have a C file which invokes a linux command. I want to execute the file using crontab. Its like whenever the system boots up and contents gets loads i want to execute this script. The problem is I don't know how to run the script using crontab. For eg if the file is present under /home/user/first.c . In order to execute this script whenever system starts wat wil be my command
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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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May 6, 2010
I want to get mail from the crontab log file....
How to set log file in crontab and the second and how can i get mail from the crontablog file.
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Dec 19, 2009
I am trying to set up an alarm via crontab. I can play music by "/usr/local/bin/mp3blaster /home/burak/Desktop/kemannnnn.mp3" command on terminal. However when I wrote this line in crontab it doesn't play:
04 19 * * * root /usr/local/bin/mp3blaster /home/burak/Desktop/kemannnnn.mp3
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Jun 6, 2010
I used crontab to set a file playing at a certain time, this works fine; however I want this to run even if no-one is logged in (but the computer is on). I can't get it to do this
Line is: 30 06 * * * env DISPLAY=:0.0 /usr/bin/totem /home/adunaic/Playlist.pls
Okay I think the problem was with needing a GUI.
Using this instead works, but i only hear the sound when I log in. I think something needs to be doen to start the audio perhaps?
14 17 * * * export DISPLAY=:0.0 && /usr/bin/mpg123 /home/adunaic/alarm.mp3
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Jun 14, 2010
I just install F-prot software on my Fedora 13. The following entry was added to /etc/crontab16 * * * * <user> /home/<user>/Desktop/f-prot/fpupdate > /dev/null.I tried to use "crontab -e" or "-l" but unable to edit the crontab.
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Mar 31, 2011
I am unable to use crontab as a user on my system.
Code:
The error is: You (user) are not allowed to access to (crontab) because of pam configuration. I did just recently do an update but I am not sure why this is acting up. I also tried it as root and it also failed with a similar message. I had several crons that ran daily and they are not currently working also. I have selinux Disabled and it has been that way for some time.
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Aug 14, 2011
I have been using a private computer on my departmental network. I am now in the process of switching to the public system. This is a system of different computers, each of which mounts the same homeserver directories for users. One may login to any of these machines and see the same home directory. The department is running a clone of Red Hat Enterprise Linux called Scientific Linux. It is not a lot different from Fedora Linux.
I copied a crontab entry form my private machine and ran crontab -e on one of these computers. I suppose it will now do what needs doing, but what if I need to change the entry or add other entries. I will have to search around for the one computer on which crontab is running. Is there some global network way to do the same thing, i.e., so that I can edit the crontab entries from any machine in the public network?
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Jan 13, 2010
For some reason crontab does not work on my system.
Fedora Core 11
I am running from a Virtual Private Server.
Code:
Code:
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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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Jul 6, 2010
I have a feature that keeps me going back to Mac every night, and I was wondering if there was an equivalent. I have a nice app called alarm clock on Mac that plays music from my library on specified days of the week and times AND can wake the computer from sleep to do so. I was wondering if there was a Linux equivalent, such as crontab, that could do all those things. It's the last barrier to almost full time Linux use.
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Feb 5, 2010
I am vijaya, glad to meet you all via this forum and my question is I set a crontab for automatic downloading of files from internet by using wget but when I kept it for execution several process are running for the same at the back ground. My concern is to get only one copy, not many copies of the same file and not abled to find out where it's actually downloading.
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Jul 3, 2010
As root, I use crontab to run mirrordir to backup directories. Everything gets copied over properly, but owner information isn't preserved and root is the owner of all the backed up files. I can deal with that, but crontab reports tons and tons of chown/chgrp errors for mirrordir every time I do back ups--which is every day--and the multiple emails to root of thousands of chown/chgrp errors is very annoying. The error is "Operation not permitted," but that doesn't make sense to me because the job runs as root (right?) and clearly the job is permitted to create the backup files, so why would it fail to chown and chgrp?
I've had the exact same setup on another server for years, and crontab has always run mirrordir without error. Any suggestions how to clear the errors on my new server?
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Jan 26, 2010
I edited the passwd file to modify the default shell for root from bash to tcshnow when I try to login to root it gives me the following error:"su: /bin/tcsh : No such file or directory"
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Mar 24, 2010
the terminal and logged in as root i was changing file permissions and happened to change the root folder to 700. Now my icons have gone and i can't even access the terminal.
I was just wondering if it is possible to go to rescue mode using the cd and restore all the appropriate file permissions to root/ users if possible
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Jul 14, 2011
I've started to get emails that would typically come from [URL] as [URL]. These emails come from services that send out emails (backup programs) directly, or from cronjobs. I've logged in as the non-root account and either sudo su - or su - to root and the restart the service at one point or another. If I login directly as root and bounce the service or cron the emails come across as from root. I don't see anything in my environment variables after I su to indicate what would cause this. I'm not sure where else to look? A pam setting? This seems to have happened between Fedora 10 and 14 (did a bunch of overdue upgrades recently) I've only got Fedora so I don't have anything to compare to. In Fedora 10 I did not have this problem.
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Oct 20, 2010
I found this on Bee's website. For more info on this exploit there are links there:[URl]..All you have to do in Fedora 13 is enter the following lines in a shell as normal user:
[Code]...
I don't think this can be considered solely an "upstream" problem, because I first tried it in Arch using the same version of glibc, and the final command causes both gnome-terminal and xterm windows to disappear.
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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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