I'm having serious problems running cron. I want to create midnight backups of my files on my unix server and there is something wrong with cron.
Here is what I do:
First I saw that cron is running (while logged on as root) by typing "ps -aedf|grep cron" and I noticed that there is 1 instance... (4 Replies)
Hi, I am having a few problems with cron.
I have created a shell script (to rotate www logs - this works) and then did the following (as root)
#crontab -e
2 0 * * 3 /cron_scripts/wwwlogs.sh
?
w
?
q
#
crontab -l
entry not shown e.g. it did not show what I had just writern
I then... (6 Replies)
Hi there,
this time a have a other problem :)
i will start a script over the cron.
if i start the script manual (per command) it works without any problems, but over the cron it doesent work.
my cron looks like this:
26 15 * * * /path/scriptname.sh 2> /path/error.log
there is no... (3 Replies)
Hi,
I've created a cron job for a script with a rsync command in it. The script is named pull.sh and contains the following line :
What it is supposed to do is pull backup files from the production server of my company to my local server. It should also generate the log file (output.log)... (1 Reply)
Dear Friends,
I am running a script which runs a select query from a sybase table and outputs the result (1 row) into a .txt file in unix. When I run the script manually it behaves normally. However it doesnt run in crontab.
#!/usr/bin/ksh
. /opt/ivb/config/set_env
... (1 Reply)
how to store a date into file?
and how we can access date from the file?
---------- Post updated at 06:09 AM ---------- Previous update was at 06:08 AM ----------
how we can store date in file? (1 Reply)
Hi all!!
I have a nerve-wracking concept (probably for me!!) which is not understood. My crontab entry looks this way.
33 09 22 3 * /home/myexp.sh "Bgp4 ALL" >/dev/null 2>&1
But cron gets started occasionally. Sometimes it does. Sometimes it does not. And sometimes it hangs in the middle (I... (1 Reply)
Hi friends,
today i created a cron job , registered the crontab file associated but dont know why the cron is not getting executed at the right time.??
content of Crontab file :
21 15 * * * /subrat/myt
i wanted to execute the script myt on 15:21 PM of everyday.
the script myt... (2 Replies)
I am trying to setup a cron that runs a script to update my ip for my domain name every time I reboot and checks if my ip changes every 5 minutes and if it does then I update it. I am running Ubuntu server 12.04.
The file /etc/cron.d/ipupdate contains
#
#
# Run ipupdate
#
#
/5 * ... (3 Replies)
Good evening, ive got this cron to be run:
if i run this manually it doesnt work,it takes me to the prompt again
/export/app/CO/opge/scr/Informe_parametros_colombia.ksh >/dev/null 2>&1
here is the code fragment:
coopge@coopge: opge PRODUCCION>more... (1 Reply)
Discussion started by: alexcol
1 Replies
LEARN ABOUT CENTOS
crontabs
CRONTABS(4) Crontabs users' Manual CRONTABS(4)NAME
crontabs - configuration and scripts for running periodical jobs
SYNOPSIS
run-parts [--list|--test]<directory>
DESCRIPTION
Crontabs is a historical name for the run-parts script and the system crontab. The run-parts script runs all executables in the specified
directory. Run-parts runs all executables in the specified directory. The execution of files can be allowed or denied by creating file
jobs.allow or jobs.deny which worked similar as other allow/deny config files. The file must be created in the specified directory.
--list print names of all files (not limited to executables), but don't run them. This option can't be used with test option.
--test print names of files, which would be run.
Randomization of jobs can be configured in the /etc/sysconfig/run-parts file. To enable randomization of jobs, set the RANDOMIZE
parameter to 1 and set the RANDOM parameter to an integer which determines a random seed. Additionally, you may configure the RAN-
DOMTIME parameter (again, by specifying an integer) to provide an additional level of randomization. Jobs are not randomized when
the RANDOM and RANDOMTIME parameters are set to 0. Values in these two parameters must be set to 1 or larger to provide a good
enough randomization.
Randomization of cron jobs can be useful for shared networks, where multiple cron jobs executed at once can cause spikes in traffic,
especially during daily jobs. With randomized jobs, the workload is evenly distributed throughout the day.
EXAMPLE OF CONFIGURATION FILE
RANDOMIZE=1
RANDOM=4
RANDOMTIME=8
Historically the crontab file contained configuration which called run-parts on files in cron.{daily,weekly,monthly} directories. These
jobs are now run indirectly through anacron to prevent conflicts between cron and anacron. That means the anacron package has to be
installed if the jobs in these directories should be running. Refer to the anacron(8) how to limit the time of day of the job execution.
EXAMPLE
/etc/cron.daily/jobs.deny could contain for example 0logwatch which forbid execution of this script.
SEE ALSO anacron(8), crontab(5)Marcela Malaova 2012-08-29 CRONTABS(4)