Process states in linux systems

There are many states for processes in linux environment. You can see the process states using the following commands.

#ps
#ps -ax       -From all users and terminals.
#ps -aux     -Shows Process owner also.

For the dynamic details:

#top
#top -c      -Sorts according to CPU usage.
#top   and pressing M(shift+m)  - sorts according to memory usage.

Main process states are as follows:
D       Marks a process in disk (or other short term, uninterruptible) wait.
I        Marks a process that is idle (sleeping for longer than about 20 seconds).
R       Marks a runnable process.
S        Marks a process that is sleeping for less than about 20 seconds

T       Marks a stopped process.

Z       Marks a dead process (a ``zombie'').

Additional characters after these, indicates additional state information:

             +       The process is in the foreground process group of its control terminal.

             <       The process has raised CPU scheduling priority.

             >       The process has specified a soft limit on memory requirements and is currently           exceeding that limit; such a process is (necessarily) not swapped.

             E       The process is trying to exit.

             L       The process has pages locked in core (for example, for raw I/O).

             N       The process has reduced CPU scheduling priority (see setpriority(2)).

             s       The process is a session leader.

             V       The process is suspended during a vfork(2).

             W       The process is swapped out.

             X       The process is being traced or debugged.