So i want to try make a basic schedule with crontab, this is the basic script :
* * * * * date >> /home/clauds/crontab.log
* * * * * cp /home/clauds/ahmadbagas /home/clauds/bckup
* * * * * cp /home/clauds/masjayeng.txt /home/clauds/bckup
if i do it like that it works, but when i try to change to backup file for every 5 minutes or else it doesn't work:
5 * * * * date >> /home/clauds/crontab.log
2 * * * * cp /home/clauds/ahmadbagas /home/clauds/bckup
5 * * * * cp /home/clauds/masjayeng.txt /home/clauds/bckup
i try to add user in the command like this :
5 * * * * root date >> /home/clauds/crontab.log
2 * * * * root cp /home/clauds/ahmadbagas /home/clauds/bckup
5 * * * * root cp /home/clauds/masjayeng.txt /home/clauds/bckup
it's still doesn't work, and give a error message like this:
/bin/sh: root: command not found
can someone help me, why am i only can make schedule for everyminutes?
*/5 * * * * date >> /home/clauds/crontab.log
*/2 * * * * cp /home/clauds/ahmadbagas /home/clauds/bckup
*/5 * * * * cp /home/clauds/masjayeng.txt /home/clauds/bckup
The second one will be every two minutes
Related
i am trying to schedule my script.sh script to run every day from monday to friday at 9:35 am. When I run my script with ./ directly in the terminal everything works fine. But when I tried to run in the crontab -e nothing worked.
Here is the list of what I tried:
- * * * * * root /bin/script.sh
- * * * * * root sh /bin/script.sh
- * * * * * root bash /bin/script.sh
- * * * * * root / bin / sh /bin/script.sh
- * * * * * /bin/script.sh
- * * * * * sh /bin/script.sh
- * * * * * bash /bin/script.sh
- * * * * * / bin / sh /bin/script.sh
I put an execution every minute just for the test.
Otherwise the final command will be something like this:
- 35 9 * * 1-5 /bin/script.sh
I must have forgotten an important step or something.
Of course I restartcron with each modification with:
- service cron restart
That should work
* * * * * /bin/bash /bin/script.sh
You can also add a shebang in the beginning of your script
#!/bin/bash
... your script here ...
This will let you execute the script directly by calling it with /bin/script.sh
The system will know that he need to start bash to execute it
You will need to get execution access right
chmod +x /bin/script.sh
This will give execution rights to anyone, check chmod man if you want to give execution access to only owner
The cron will be just like that
* * * * * /bin/script.sh
Keep in mind you will not get any output with a cron, you can still redirect stdout to a log file
* * * * * /bin/script.sh >> /var/log/myscript.log
If you use crontab -e as root, you don't need to use sudo or anything like that
I created a cronjob with the command crontab -e:
* * * * * (filename).sh
This file test.sh should be executed every minute. But it doesn't work.
I know that it is not the script because i did run bash (name of the file) it works so the crontad is the issue.
every minute:
* * * * * sciptname.sh
every 24hours (every midnight):
0 0 * * * sciptname.sh
Hello my server is restarting every hour, where the problem ?
Centos 6.6 with WHM/Cpanel
This my cronjob
root#server [/etc/cron.d]# crontab -l
0 6 * * * /usr/local/cpanel/scripts/exim_tidydb > /dev/null 2>&1
30 5 * * * /usr/local/cpanel/scripts/optimize_eximstats > /dev/null 2>&1
2,58 * * * * /usr/local/bandmin/bandmin
0 0 * * * /usr/local/bandmin/ipaddrmap
18 23 * * * /usr/local/cpanel/scripts/upcp --cron
0 1 * * * /usr/local/cpanel/scripts/cpbackup
0 2 * * * /usr/local/cpanel/bin/backup
35 * * * * /usr/bin/test -x /usr/local/cpanel/bin/tail-check && /usr/local/cpanel/bin/tail-check
45 */4 * * * /usr/bin/test -x /usr/local/cpanel/scripts/update_mailman_cache && /usr/local/cpanel/scripts/update_mailman_cache
30 */4 * * * /usr/bin/test -x /usr/local/cpanel/scripts/update_db_cache && /usr/local/cpanel/scripts/update_db_cache
30 */2 * * * /usr/local/cpanel/bin/mysqluserstore >/dev/null 2>&1
15 */2 * * * /usr/local/cpanel/bin/dbindex >/dev/null 2>&1
15 */6 * * * /usr/local/cpanel/scripts/autorepair recoverymgmt >/dev/null 2>&1
*/5 * * * * /usr/local/cpanel/bin/dcpumon >/dev/null 2>&1
46 0 * * * /usr/local/cpanel/whostmgr/docroot/cgi/cpaddons_report.pl --notify
7,22,37,52 * * * * /usr/local/cpanel/whostmgr/bin/dnsqueue > /dev/null 2>&1
42 4 * * * /usr/local/cpanel/3rdparty/bin/freshclam --quiet --no-warnings
Just looking at your cron jobs I can see that this job runs every hour, so that is a good place to start looking:
35 * * * * /usr/bin/test -x /usr/local/cpanel/bin/tail-check && /usr/local/cpanel/bin/tail-check
Also, this job runs twice an hour, but they happen so close together that it might appear to occur only once. Check it out next:
2,58 * * * * /usr/local/bandmin/bandmin
If you can, I would just comment out these 2 jobs for a few hours and see if that solves your problem. If it does then you know one of these is causing the reboot.
I am trying to run a cron job every 5 minutes from 8:30 AM to 9:30 PM. I've been searching around the web and here is what I came up with:
30,35,40,45,50,55 8 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
*/5 9-21 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
5,10,15,20,25,30 22 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
I have looked at cron job generators but they do not seem to address the requirement to start/end on the half-hour. Does anyone have a better or more concise solution?
30-59/5 8 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
*/5 9-20 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
0-30/5 21 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
should also work, and easier to read.
30-59/5 8-20 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
00-25/5 9-21 * * * /path/to/whatever.sh >> /var/log/whatever.log 2>&1
would serve the purpose.
I know that crontab job emails output of the job to its user. In my crontab file I have multiple jobs like:
10 21 * * * test1.sh
13 21 * * * test2.sh
0 * * * * test3.sh
I don't want to receive email for test3.sh. Does below code works? I want to make sure that only for the last job I wont receive email.
10 21 * * * test1.sh
13 21 * * * test2.sh
MAILTO=""
0 * * * * test3.sh
See http://www.cyberciti.biz/faq/disable-the-mail-alert-by-crontab-command/
You could use something like
0 * * * * test3.sh >/dev/null 2>&1
There will be no output --> no mail sent.