Are there any commands that reports free (or used) space left on unmounted partitions? The partitions will have either NTFS, FAT or Ext2|3|4 filesystems... A bonus would be a program that also reported partitions without filesystems and unpartitioned free-space.
I'm not after anything complex like gparted, just something giving a quick list of space used/left (like df). Preferably text-based (no GUI or complex CLI, just a list).
The reason I ask, is that I have several (many!) external hard-drives, and would like to quickly find out which have space left, without jumping through too many hoops (like actually mounting and unmounting them).
I remember encountering such a program as an utility on the installations disk for some OS (not sure if it was a Linux-distro or not), but can't remember which or what the utility was called.