cpanel creates backups in tar.gz format, sometimes you want to recover a single file from the tar gz file.
If on linux you can extract everything into a spare directory and work from there using the following command suitably edited
tar -zxvf mybackup.tar.gz -C /home/myrecovery
If you need to see what is in the tar.gz file use
tar -tvf mybackup.tar.gz
If you want to recover a specific file of directory tree e.g. for a database in myaccount/mysql/mydatabase.sql then is can be done with
tar -zxvf mybackup.tar.gz myaccount/mysql/mydatabase.sql -C /home/myrecovery
if the recovery directory doesn’t exist or omitted the files are expanded into the current directory