Which of the following commands is used to see the amount of free disk space on a volume that is on an Linux machine?

The df (disk free) command displays available and used disk space on a drive. This command's syntax is df [option] [file]. If you type df and click Enter, it will display the available space on all mounted filesystems. If you specify a file, it will return information about that file. The grep Linux command will look for files that match a pattern you specify. The ps command displays the processes that are presently operating, together with their process identifiers (PIDs) (process IDs). In Linux and macOS, the dig (domain information groper) program can find information on DNS name servers, mail exchanges, and hosts.