What command should I use to find out which files have been modified in the last 30 days, and what command should I use to copy these files to my home directory?
It's my second day working with Linux...

Look at the find command with the -mtime and -exec options.

By the way, what does the title of this thread "Case" have to do with your problem?

Thanks hydrurga.

Please come back and let us know what you come up with. I'm sure that folk on here will help refine your command for you if you just show us what you have produced so far.

?
find -type f -mtime -30

Some remarks:

• even if it's implicit in your example, you should get into the habit of specifying your search starting point (e.g.: find . -type f <some_other_options>)
• there is no minus after -mtime option (-mtime 30)
• you still need to use the -exec option for what you want to accomplish in fine with your files (you will need "{}" that represents your current file to be moved with mv)

PS: as stated by hydrurga, please write a more appropriate title for your thread.

1 members found this post helpful.

There is a minus sign in front of 30.
-mtime -n: Modified LESS than n days ago
-mtime +n: Modified MORE than n days ago

Without '+' or '-' it is exactly 30 days IIRC.

jlinkels

2 members found this post helpful.

Okay, thanks for this clarification

removed due to error in thinking.

That is a strange statement. When installed properly a computer syncs time with NTP. And even when it not does it, time is synced with the HW clock at every boot.
If this were true, any backup and restore scheme and any action depending on a file's timestamp should be unreliable.
The OS's file routines makes strong assumptions about the time being correct and procedures have been implemented at great length to keep the system clock correct. Like unprivileged users cannot change the time. NTP is not allowed to make time jumps while adjusting.
Can you justify this claim?

jlinkels