I hope this is what you're looking for.. Most of these could be easily turned into shell scripts.. and anything using lsof, you could probably do as a quick shell script that directly accesses /proc.
1) pargs (Print process arguments, environmental variables, etc)
ps auxwwfe
you can also get env from cat /proc/$PID/environ
2) pcred (Display process credentials)
ps -eo pid,user,cmd,cwd,euid,egid,gid,uid,fgid,pgid
etc.. there is probably an easier way.. I'm not sure off hand.
3) pfiles (Display open file info)
lsof
4) pldd (List dynamic libs associated to process)
lsof -p PID
can also look at /proc/$PID/maps
5) pwdx (Display current working directory for process)
lsof -p PID|grep cwd (There is probably an option to only show cwd)
alternate: ls -l /proc/$PID/cwd
