How to create a simple shell script to backup

Shell Programming and Scripting
1

Hello - I am in process of deleting many files which are older than 4 weeks.

For example I am inside:

/subsystem/prod/

Files are with various extentions, but anything older than 4 weeks should be deleted.

What would be the most simplest script to acheive this?

2

Use this with caution !!

find /subsystem/prod/ -type f -mtime +28 -exec rm {} \;
3

You can use find command as below

find /subsystem/prod/ -type f -mtime +28 -exec rm -rf {} \;

This will delete all the files more than 28 days old. I am afraid there is no option available for weeks as time unit.

P.S. Be cautious as this will also delete the files in subdirectories as well.

4

So by using this command, it will also delete files old in subsystem and ALSO in prod?

Is there a way to just define "prod" - otherwise it wont work..

5

It will only delete the files in /subsystem/prod and it's subdirectories

You may have a look on the man page of find to find the options you need.

-maxdepth N

will limit to N levels deep in the subdirectories