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what is the command to see the amount of mb you have left on your hd? and, how do you see the number of mb a user is using?

df -h will display your partitions with space used/leftover, etc.

The only command I know off top of my head to get a users space taken in their home directory, you can use du -h /home/user

Which will give you a list of directories/files then the total at the end of the list.

thanks :)