Limit hd quota and memory usage by user at linux

[Pablo Augusto <email@pabloaugusto.com>]

Hello

i need limit hd quita and memory usage by user
whats the best way to do this?

for example: lets supose i have a server with 4gb ram and 40gb hd,
i want share all resources with 4 users, so each one must have garanteed 1gb ram (can use more if are avaiable)
and use max 10gb hd.

how can i do this?

obs: i dont use panels like cpanel, plesk or any other