how to adduser in linux

[devaraju]

i'm student doing my coursework so could u anybody please help me in linux adding user and controlling the user permissions.
when i adduser it give me the folloing message:
You have new mail.
-bash-2.05b# adduser joe
vipw lockfile (/etc/ptmp) is present.
-bash-2.05b#

thanks

[Hayl]

I split your thread into two -- per our posting guidelines -- one question per thread.

The split off thread is at: http://www.justlinux.com/forum/showthread.php?s=&threadid=139075

man useradd

man <insert any command name here> will generally give you the documentation for the command.

also, maybe you should go through the Linux Documentation Project (http://www.tldp.org/tldp-redirect.php?url=/) which covers basic commands like the useradd command. we also have an extensive number of posts on this site. generally if you search before asking you will find the answer you need.