commands file

Where can i found on a UNIX machine the actions and commands history???
any one can help me???sanks

It depends on your shell, e.g. if you use bash then look into ~/.bash_history

What OS and what shell are the commands run in?

Usually the .history file in the user's login directory is a place to start.

Is accounting enabled?

Sun OS 5.8, solaris 8

what shell?
bash would have it in $HOME/.bash_history

you can use the command fc -l in k-shell to list the history
Also check for file .history in your home directory

On SunOS 5.6 it's in histstore in your home directory (~/histstore) - may be the same for 5.8