使用parted和print free命令，我在Ubuntu Server中显示了可用空间：
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print free
Model: ATA VBOX HARDDISK (scsi)
Disk /dev/sda: 53.7GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
17.4kB 1049kB 1031kB Free Space
1 1049kB 2097kB 1049kB bios_grub
2 2097kB 21.5GB 21.5GB ext4
21.5GB 53.7GB 32.2GB Free Space
I want to use the 21.5 GB Free Space in my Ubuntu Server. I want to merge it into Partition #2. How shall I do it?
