Root Disappear: files and directories

[TOMOTH]

Hello Everyone;

I've been doing a lot of work on my S-S Galaxy 10.1 tablet.

This morning I adb into it and now /root is empty of files, and the /tmp directory I created is no longer there.

QUESTIONS:

o Is there a grim-reaper that runs under the Android O/S?

o Where should I make my home directory so that my files don't get deleted?

regards,
TOMOTH

 

[Sepero]

Hi TOMOTH. Welcome to AndroidForums. To help you get a better answer your question, I have moved your thread to the Samsung Galaxy Tab 10.1 forum.

If your Tab is a model 2 or 3, please let me know and I will re-move it to that appropriate forum.

Perhaps you could explain what you mean by "grim-reaper"?

 

[TOMOTH]

Hello Sepero;

On my Linux box (Fedora 16), there is (was - after I got done with it) a program goes around and deletes things. I call is "the grim reaper".

It removes all sorts of files - especially in /tmp.

(If I continue, it will turn into a rant-and-rave, so I'll stop at that).

ANYWAY,

Where is the shellfile or <cron> file that tells the system to delete stuff?

regards,
TOMOTH

 

[Sepero]

There is no cron that I'm aware of on Android, but I'm sure something temporary files do get erased on reboot.

In an Android OS, there are 2 primary partitions: /system and /data

/system is generally only modified with firmware updates, is read-only, contains the OS files.

/data contains all system editable settings, installed apps, and app settings.

If you want to store large amounts of files, you would generally do that on a micro sdcard.

Where are you trying to store files and having them erased?

 

[Sepero]

Oh yeah, some places like / (root) can be mounted using a ram filesystem, so they are automatically erased when the system powers off.

 

[TOMOTH]

Hello Sepero;

Ahh now it's starting to make sense: I saw a note (while surfing root websites) and now I understand what they meant about RAM filesystems being deleted when powered-down.

Also, when I have having a similar problem with my Fedora 16 system (deleting files in /tmp that were more than a month old) one of the guys said that I shouldn't keep things in there because the future versions of Linux will be using RAM FS for things like /tmp.

Yes, I was putting my files in /root.

Now, I've created /data/user/home/root and put my files in there. Seems to have taken care of the problem.

Oh - I don't have a lot of files I want to put on the tablet - just some shellfiles so I can play around with the O/S.

One last question: Is there a website that you know of that has information about how iOS (I think that's the name of the O/S running on Androids) works?

Thanks for all your help, Sepeco.

regards,
TOMOTH

 

[Sepero]

"Linux" is the kernel.

"Android" is the OS.

"IOS" is the OS used on Apple devices.

Here is the wiki for Android.

And for learning about the system- I learned most of what I know from Googling it.