cron job help

[Skiiwee29]

Hey guys, In a pickle here and I am very lost... need to create a cron job on a linux server to SSH over to a different device and run a certain command on a 4hr timer. I have the timer written.. I think? But I honestly have no clue how to write the bash script to execute it. This is in a CentOS based linux server.

 

Here is the cron job I came up with based on quick research.

 

30 0,4,8,12,16,20 * * * /root/bash script file

 

From my understanding, this should tell the server that at 30 minutes past every 4hrs it should execute correct?

 

Its simple, its needs to SSH over to the device and run a single command and thats it. Any help would be greatly appreciated. 

 

[vorticalbox]

Why not run the corn job of the other device and avoid remote shells?

 

0 */4 * * * should run every 4 hours

[Skiiwee29]

1 minute ago, vorticalbox said:

Why not run the corn job of the other device and avoid remote shells?

 

0 */4 * * * should run every 4 hours

Its a cisco ASR1K router, which to my knowledge has no support for scripting jobs. 

[vorticalbox]

3 minutes ago, Skiiwee29 said:

Its a cisco ASR1K router, which to my knowledge has no support for scripting jobs. 

that is a shame

you should be able to use the ceon i posted and then poi t it to a sh script

 

https://www.geeksforgeeks.org/how-to-setup-cron-jobs-in-ubuntu/

 

 

[Skiiwee29]

2 minutes ago, vorticalbox said:

that is a shame

you should be able to use the ceon i posted and then poi t it to a sh script

 

https://www.geeksforgeeks.org/how-to-setup-cron-jobs-in-ubuntu/

 

 

Right, but I dont know how to write/format the sh script.. thats the part I need help with mostly. 

[Skiiwee29]

18 minutes ago, vorticalbox said:

that is a shame

you should be able to use the ceon i posted and then poi t it to a sh script

 

https://www.geeksforgeeks.org/how-to-setup-cron-jobs-in-ubuntu/

 

 

so after searching more and doing more and more research, I was able to find a way to get a KRON job up on the Cisco device that should do the trick I need. 

[Larry78]

If you have no experience with setting up cron jobs on servers or don't have access to do it, you can use a third party solution like Easycron.com who will call your URL at a specific time.