The dump command is a program on Unix and Unix-like operating systems used to back up file systems. It operates on blocks, below filesystem abstractions such as files and directories. Dump can back up a file system to a tape or another disk. It is often used across a network by piping its output through bzip2 then SSH.

dump command in Linux is used for backup the filesystem to some storage device. It backs up the complete file system and not the individual files. In other words, it backups the required files to tape, disk or any other storage device for safe storage.

The dump command is a Linux utility used to create backups of file systems. It is an older command, mostly replaced by more modern backup utilities like rsync and tar. However, some systems still use dump for backups, so it is helpful to understand how it works.