ext4
The primary file system for Fedora 12 is ext4 but you may also use ext3.
ext4
ext4
vi
The first file system Linux supported was the MINIX file system.
ext3 is the default file system for Red Hat Enterprise Linux.
There are no similarities. Fedora (or any other Linux distribution for that matter) doesn't really care about file extensions; they aren't used by most programs, and are not required to identify file types.
The NTFS file system is supported in Linux by both a kernel module and several userspace programs. It is not supported as a root file system and is not recommended for permanent file storage.
The pros and cons of the Linux file system include the quote saying "On a UNIX system, everything is a file, if something is not a file, it is a process". You can consider this either a pro or a con.
The Linux VFS (Virtual File System) may be thought of as a sort of interface between the Linux kernel and the mounted file systems. There can be many different file system types mounted simultaneously and VFS allows the Linux kernel to see and address them all in a similar way. This provides Linux with a great deal of flexibility. [JMH]
The Linux ext3 file system is the default system in many linux derivatives. It allows for journalling, which the ext2 system did not. It also allows in-situ upgrades without asking for a backup first.
Traditionally in /usr/src/linux.