What the correct way to execute cron job to be run at
Wed in 2nd / week and wed in 4th week of each month
any tips
Following would run the job on every wednesdays at 11 AM
00 11 * * 3 <your-command>
Here the 3 says, the command to run every Wednesday. You would need to create a wrapper script, to just skip the execution on alternate Wednesday, and call that script from above cron.
Related
I would like to run the cron job every 20 minutes between 9 AM and 11 PM and once an hour after 11 PM until 9 AM.
cron job settings
I created 2 cron jobs for the same script to achieve my goal. Did I do it correctly?
Thank you.
Not really. There are two issues:
you run the script also on 23:20 and 23:40
you run the script twice from 09:00 till 23:00 every hour.
The way to do it is:
*/20 9-22 * * * command
0 0-8,23 * * * command
You can validate this using crontab guru
This question already has an answer here:
Run cron job every 2 minutes except the first minute "0" of the first hour "0"
(1 answer)
Closed 3 months ago.
I need to run a python script that starts at 11:30am and then runs every 30 mins till 7PM every day.
The expected included intervals will be: 11:30, 12:00, 12:30, 1:00 ...... 7:00
I have currently defined the Cron Job as:
*/30 11-19 * * * /usr/bin/python3 /mnt/h/WorkSpace/Projects/Backlog_Buddy_Bot/CTest.py
Current Output Intervals: 11:00, 11:30, 12:30, 1:00 ...... 7:00
The problem that I am facing here is this expression includes 11:00 which I dont want. Is there a way I can fix this or is there any alternate scheduler which lets me achieve this?
Disclaimer: I have never run the script till 7:00PM since the starting time has been an issue, so I am not sure if this includes 7:30 as well.
you can use 3 cron job for it.
1-
00,30 12-18 * * * /usr/bin/python3 /mnt/h/WorkSpace/Projects/Backlog_Buddy_Bot/CTest.py
2-
30 11 * * * /usr/bin/python3 /mnt/h/WorkSpace/Projects/Backlog_Buddy_Bot/CTest.py
3-
00 19 * * * /usr/bin/python3 /mnt/h/WorkSpace/Projects/Backlog_Buddy_Bot/CTest.py
I am trying to setup a cron job on a Ubuntu server. I want the cron job to run the script on weekly basis. Problem is - It should be a working day, If im mentioning it with time interval, it fails during weekoffs - Need an Schedular Exp which has to work weekly only on working days at office hours.(9am to 9pm)max.
Want to Execute the script every week #6 pm during the weekdays. It Can be Mon to Fri.
Step1
sudo apt-get install cron
systemctl status cron
Step2
Configure the cron job:
crontab -e
Select an editor of your choice
0 0 * * 0 /path/to/command
Syntax: minute hour day-of-month month day-of-week command.
Day-of-week goes from 0-6 where 0 is Sunday.
Save it.
I already have a cron expression as : " 35 6 * * 2-6 ", which states the
job will run every morning 6:35 from tuesday to saturday.
I want to exclude 28th Dec and 3rd Feb from this expression.
We are evaluating this cron expression in java code.
These expressions are for jobs written in java.
There is a parent job A.
It has two child jobs A1 and A2.
For job A to run, both A1 and A2 should be successful.
I need to configure this exceptional date parameter for A1 and A2 with
existing cron condition.
Both A1 and A2 should not run on 28th Dec and 3rd Feb.
Can anyone please assist.
You could split your cronjob into three:
35 6 * 1,3-11 2-6 A1.sh && A2.sh
35 6 1-2,4-28 2 2-6 A1.sh && A2.sh
35 6 1-27,29-31 12 2-6 A1.sh && A2.sh
Where A1.sh and A2.sh are shell script that would execute your child jobs A1 and A2. Make sure the shell scripts have the right permission.
I have created scripts and now I want them to run automatically at specified time, how can I do that?
I am using Ubuntu and JAVA to write my scripts.
You can use crontab to do this in a specific time continuously.
To edit a crontab entries, Login as root user (su – root) and do crontab -e as shown below. By default this will edit the current logged-in users crontab.
root#dev-db# crontab -e
Scheduling a Job For a Specific Time
The basic usage of cron is to execute a job in a specific time as
shown below. This will execute the Full backup shell script
(full-backup) on 10th June 08:30 AM.
Please note that the time field uses 24 hours format. So, for 8 AM use 8, and for 8 PM use 20.
30 08 10 06 * /home/ramesh/full-backup
More example here, and the crontab utils can be found here