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How to recover a removed file under linux
I had a project directory inside my Eclipse workspace folder (on my Ubuntu Linux system)
By mistake I have overwrite this folder with a new wrong version dowloaded from Internet...
Can I recover the old deleted directory in some way?
Probably, you have ext3 or ext4 filesystem.
You may try to use program extundelete. On official page you'll find documentation.
Hope that it helps you!
P.S. Recommend you to use backups or better -- control version systems for your projects.
The short answer is no.
The long answer is maybe. It depends on the filesystem. It depends on the amount of data. It depends on how recognizable the files are. And, most importantly, it depends on whether or not the actual areas of the disk that contained the information that you accidentally deleted have been overwritten.
How to do this is rather outside of the scope of a StackOverflow answer. I would suggest bringing this to a professional if you care about retrieving your data. Until then, do not mount the drive read write and if it's ext3 or 4 mount it through a loopback device to prevent journal writes.
Your favourite search engine will probably point you towards some pages about this, for instance, I found https://askubuntu.com/questions/25311/best-tool-to-recover-removed-files
