Can i save a file automatically in a certain time interval ?

if you mean in MS-Office... it's easy.

follow the Steps Below In WORD for example

1- Go to File > Options.

2- from Save Section on the Left, and section Save document on the right.

3- Select the file Type that you want to save it to every time. and also select the Time Interval for saving the file every period of time.

4- Select the Path that you going to save your Recovery File. (May be you put it on another place that C Drive.)

Enjoy.

In AutoCad you can press    ctrl + S 

that will make program save  quickly >>

Most of the softwares got recovery if the tool crashes or so.

Another is warning: In solidworks, after20min (default), it gives a warning. Time can be modified. 

Set the options through 

Tools> Options> System Options> Backup/ Recover

Backup: Backups are additional copies of SolidWorks files optionally saved to an alternative location. The backup is the version before the last save. You can save up to10 backups of each document and set to clear them out after a certain number of  saves.

AutoRecover: Automatically saves information about the active file which can be redeemed after an unexpected termination or crash. AutoRecover is different to AutoSave as the Recover tool can be set after a certain number of rebuilds or a certain amount of time. AutoRecover information is only available after an unexpected crash where it will be available on the AutoRecover tab on the RHS of the screen.

Save: Notification Provides an on screen prompt after a set amount of time of changes reminding you to save.

It is advised to set the locations for Backups and AutoRecover to a local directory instead of a network, as a network drop out could let to file corruption or “Fail to Save” issues.

AutoSave, a feature that is available in Mac OS X Lion, saves your file automatically on a periodic basis. You can set how frequently files are saved. For example, if you set AutoSave to save every5 minutes, you may recover more information in the event of data loss — such as from a power outage — than if it's set to save every10 or15 minutes. By default, AutoSave saves Office files every10 minutes.

AutoRecover, a feature that is available in some Office applications, attempts to recover files automatically in the event of data loss. AutoRecover uses the same save interval as AutoSave.

GO TO COMMAND LINE  TYPE "SAVETIME" , NOW SET TIME INTERVEL DONE

Hai,

Please click file icon in menu bar or windows logo new systems, - word option - save - auto recover information. Here you can set your save mode and the folder of back up files. On activating this you can retrieve unsaved files,  by opening new blank file. In the left side you can the files which you want to retrieve. or you go to the selected folder following the correct path you selected or system generated already in the time of setting.  You can do this with Excel in the option of advanced. 

Click the Microsoft office button go to options select the save auto recover option and put in the desired time interval for auto save.

Yes you Can. I Agreed with Mr. Amr Mohamed Hamdy.