Old admin point of vue:
using crontab -e : fine you modify etc... but many people do that without having a spare (copy somewhere), some admins when have to do strong maintenance e.g after a crash and under pression dont want things else disturbing then and simply delete the content of the cron spool.. else, if things dont work one day, how do you compare ? (noe previous copy...).
So if you are not too confident, a good way to do things is to have your cronfile somewhere where all cron users can read (so they have no excuse in overlapping schedules...) I usually put them in /sm/cron/ , suffixed by your account name e.g confile.blondie, if paranoid make a second copy ( I do...) cronfile.blondie.last, before any modification you can compare (no one else modified without you knowing of you modified without updating...) lets say you put the cronfiles in /sm/cron
use vi to edit/modify
then load the new file:
you can chack your update with crontab -l | more ...
I add in comment where the file should be and its name:
All the best
Why does this cron entry do nothing? It works interactively.
58 23 * * * mydate=`date '+%Y%m%d'`;mv /opt/home/user/file /opt/home/user/file_$mydate (5 Replies)
HI all,
I would want to schedule a job to run every 2 weeks. In the mean time, i'm only able to schedule on every week. Is it possible to schedule 2 weeks on crontab?
Thank you. (3 Replies)
I set up a job to run a script in a certain directory to remove certain files. The script seems to run as my logs indicate but nothing happens. If I run the script manually then it removes the correct files. I'm now wondering if crontab doesnt have access to remove files from the directory I'm... (9 Replies)
My question is how to specify the one-time execution of a shell script in crontab?
For example: If I wanted to schedule shell "Test.sh" for one-time execution on December 13 at 8:00AM would it be as follows?
00 08 13 12 6 /usr/datatools/dtbackups/Test.sh > /usr/u/sybase_12.5/logs/Test.log &... (3 Replies)
Hello guys,
I have a server with Red Hat Enterprise Linux AS release 4 (Nahant Update 5), there i have a lot of users, im the root. I need to lock the use of crontab to the users, i mean, i dont want to give to the users the option to creat any crontab line, how can i do that?
I tried to... (4 Replies)
I have a user (xxx) who is allowed to run cron jobs when a job is
launched from cron is the .profile sourced in? I am not sure it is so I setup a cron job as this user to do the following:
35 15 * * 0-5 su - xxx -c "ksh ls -lt /tmp" > /tmp.out
and I am seeing the following error (see... (2 Replies)
I want to run a script on (say) the 4th friday every month. But if I include this line in the crontab :
45 9 22-28 * 5 echo '4th Friday'|mailx -s "Fri week 4" mike
it sends me mail if the date is 22-28, OR the day is friday. So I get mail every day for a week , and also every friday.
I... (2 Replies)
Hey out there
This is all I have in my crontab file. I know the crontab works because it was already out there and working. I simply replaced the existing with my line of code below to see if it worked. I uploaded 6 month old pdf files in this directory, stopped/started all the scripts that... (3 Replies)
I need to run an script every 10th and 25th day in every month at 11pm.
the script name is /home/ss/automated.sh
I tried to execute the script every day and everytime with the below syntax. its not executing it from crontab.
* * * * * /home/ss/automated.sh
Any idea why it not... (6 Replies)
Hello,
I have scheduled the execution of a file (delete_oldv02) every hour with crontab and it works perfectly. See below the instruction written.
0 */1 * * * /home/delete_oldv02 >>/home/delete_oldv02.log
My first question is if I can add one more line to crontab.
I also would like to... (5 Replies)