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
View 4 RepliesI 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
View 3 Replies View RelatedI 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.
I administer a desktop computer with ubuntu 8.04 in an university library. Since it works almost all night, to enable students to study, after some time I noticed some misuses of the computer during the evening, when there isn't many students. My goal was to disable users from accessing internet from 7pm to 7am, but also enable it if certain user was logged in (I use that user for torrent, and I seed on that computers from time to time). So I created a script that's being called by root's crontab, and here is the script's code:
Code:
#!/bin/bash
NUM=`who|grep myuser|wc -l`
#echo $NUM
if [ $NUM -le 0 ]; then
/sbin/ifconfig eth0 down
else
/sbin/ifconfig eth0 up
fi
Since I created the script, I actually never seeded anything, so I'm wondering now if that's going to work at all, and (also) is there a better solution for this.
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.
View 7 Replies View RelatedI am trying to setup a cron job using crontab entry like this 6,16,26,36,46,56 * * * * /usr/bin/fetchmail -k>/dev/null 2>&1 But nothing is happening This is the first time I have attempted using cron as I have settup mutt for my email which is now working great but I would like to have the mail collected every 10 mins The file is saved as mailcron in my /home folder. When i run crontab -l its listed ok but no mail is appearing in mutt.
View 10 Replies View RelatedI 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)
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
View 1 Replies View RelatedWhat is the difference between the crontab located in /etc/crontab and the crontab that can be edited using crontab -e?
View 2 Replies View RelatedI 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...
View 6 Replies View RelatedIf 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
View 4 Replies View RelatedI 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.
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?
View 2 Replies View RelatedI 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.
View 5 Replies View RelatedMy 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?
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?
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.
I am setting crontab to run a script every minute irrespective of the current hour's value:
Code:
[root@localhost bin]# ls
sec.php showTime.sh
[root@localhost bin]# crontab -l
1 * * * * /root/bin/showTime.sh
[root@localhost bin]#
But it is not working. Does the line mean: "Run this script every day at hour:01"?
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
View 14 Replies View RelatedI have exactly same line like in crontab and I want to remove it via shell script. How to do it?
Example:
In crontab there are:
*/1 * * * * /home/testdir/testcron.sh >/dev/null 2>&1
line, how to remove it using shell ?
My server is in CDT. I want to run one script @9.30am of EST5EDT
View 4 Replies View RelatedI want to schedule a crontab for shutting down the oracle application services. I created crontab -e by login as oracleuser and added time and run-part(script path to execute the cron). But i unable to execute on the schedule time. exact procedure for creating and execution of cronjobs in RHEL-5.
View 4 Replies View RelatedI 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:-)
I used to get the below when I ran crontab, but now its disappeared and my tasks I set up do not run in the blank crontab
#lxpr weekly cron job - Kickstart generated entry
0 1 * * 0 /opt/lxpr/lxpr -st /var/lxpr
#lxpr monthly job to clear down old dumps - Kickstart generated entry
0 1 28 * * find /var/lxpr -name "lxpr.`uname -n`*" -type d -a -mtime +30 -exec /bin/rm -r {} ;
I type this 10,20,30,40,50 * * * * /root/auto.pl
my log file
Jun 23 10:10:01 localhost crond[7702]: (root) CMD (/root/auto.pl)
Jun 23 10:20:01 localhost crond[12022]: (root) CMD (/root/auto.pl)
Jun 23 10:30:01 localhost crond[14610]: (root) CMD (/root/auto.pl)
Jun 23 10:40:01 localhost crond[18676]: (root) CMD (/root/auto.pl)
Jun 23 10:50:01 localhost crond[22402]: (root) CMD (/root/auto.pl)
Jun 23 11:01:01 localhost crond[29476]: (root) CMD (run-parts/etc/cron.hourly)
but my application doesnt run at all. my script is in perl language
Either no error and it doesn't run (The scripts all run fine manually and in the cron.daily, cron.hourly, etc. directories.) If it does try to run it, it shows this: Feb 16 12:59:01 buddha crond[3638]: (*system*) BAD FILE MODE (/etc/crontab). Here's my crontab:
[code]...
I have a crontab that is supposed to run 2 PHP scripts but they never run.
30 */3 * * * php /var/www/html/mkimages.php
0 */3 * * * php /var/www/html/import_historic_data.php
Both of these files are owned by root, is it a permissions thing? How can I get get cron to run the files?
I put below line in a sh file
#!/bin/bash
HOSTS=172.16.14.1
COUNT=4
[code]...
I'm trying to get myself familiar with bash scripting.I created a script to delete all files and folders in a specific directory, and made an entry in crontab.Crontab will not run the script, but I can run it manually.
View 2 Replies View RelatedI have and entry in a crontab for my user (appadmin) that when it executes it does not start with the proper path. It needs to start as the appadmin user as appadmin owns all the directories for glassfish. However, once glassfish restarts, the hudson application cannot find the default JDK. I get an error. If I initiate the restart via command line, all works as it should. I believe it has something to do with PATH in the crontab but am not sure what I need to set the PATH to in crontab.
View 1 Replies View Related