What is a .3FS file?
The .3FS file is a special type of file used by Puppy Linux, which is a version of the Linux operating system. This file acts like a snapshot or picture of what the computer's file system looked like at a certain moment. The file system is like a big cabinet where all your computer's files are stored, and the .3FS file captures how everything was arranged at a specific time. It uses the third version of the extended file system (EXT3), which is a way of organizing and managing files in Linux.
Imagine you're playing with blocks and you've built a cool castle. You want to remember exactly how you built it so you can rebuild it later if it gets knocked down. Taking a picture of the castle would help you do that. The .3FS file works similarly for the computer's files. If something goes wrong or you want to go back to how things were, you can use the .3FS file to reset everything to the way it was when the snapshot was taken.
Since Puppy Linux can run from a CD or an .ISO file (which is like a digital version of a CD), it doesn't always use the computer's built-in storage to run. This means the .3FS file is usually saved on a separate storage space, like a USB drive or a different part of the computer's hard drive, so it can be used when needed.
To open or use a .3FS file, you would typically do it within Puppy Linux itself or with a tool called GNOME Disk Utility, which is a program for managing disks and file systems in Linux. The "3" in .3FS tells you it's for the EXT3 file system. Puppy Linux also uses .2FS and .4FS for the EXT2 and EXT4 file systems, which are just different versions of the system for organizing files.
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