Limit hd quota and memory usage by user at linux

[Pablo Augusto]

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

Instal sun java 1.5 jdk or jre and tomcat 5.5.25

[Pablo Augusto]

hello,

im new in at linux administration,
i have to install java (1.5 [jre or jdk] ) and tomcat 5.5.25

Can anyone help me? Any goot step-step guide?
I just try search at google bur not sucess.

Thanks in advanced