The btrfsck command is a filesystem-check command like fsck, but it works with the btrfs file system.. First a little bit about btrfs.As the name implies, btrfs uses a B-tree data structure that ...

When you issue the command df, it will report the statistics on your file system (Figure A). Figure A You don’t have to list out every connected drive on your machine.

Use the basic tail command to display the last 10 lines of a file. Tail the desired number of lines by specifying the -n option. Learn how to use the +N option to display lines starting from the Nth ...