Some of the
cool things you can do with files on an ext2
filesystem:
- Create files up to 4 terabytes in size
- Create files up to 255 characters in length
- You can choose how many bytes to use per inode sizes (1024, 2048, 4096). During an installation of a distribution, Slackware is the only one I know of that will actually prompt the user and ask them. This is done using the -i option with mke2fs.
Set your file as immutable: chattr +i filename
You can't remove this file. You can't rename it. You can't modify it. It's great fun to use on friends. Only root may set or remove this attribute.
More information can be found out about special ext2fs attributes in chattr(1) and lsattr(1). Great details about ext2 can also be found doing a search on Google.