In Linux, the du and df commands are used for disk space management

The du (short for "disk usage") command is used to show the size and utilisation of a file or directory

The syntax of du command are: du <file/dir>.

To check the size of all files and directories in the current directory: du -sh 1

Use the --max-depth=N option with the du command to limit the depth of the directory tree to N levels

The df (short for "disk free") command is used to display the amount of disk space available on the file system

The syntax of du command are: df <file/dir>

To display disk space usage for all mounted file systems:  df -h