vgcreate:tldr:c0c15

This command creates a volume group (VG) with the specified name (${vg1}) and physical volume (${/dev/sda1}).

Here's a breakdown of the command:

• vgcreate: This is the command used to create a volume group.
• ${vg1}: This is a placeholder for the name you want to give to the volume group. You can replace ${vg1} with the desired name.
• ${/dev/sda1}: This is another placeholder that represents the physical volume (disk partition) you want to add to the volume group. In this case, it is /dev/sda1, but you can replace it with the actual disk partition you want to use.

So when you run the command with appropriate values, it will create a volume group with the specified name and include the specified physical volume in the volume group.