exec
Execute a command. 
SYNTAX
      exec [command [arguments]]
Executes the specified command in place of the current shell.
`exec' is a tcsh shell command.
  "Power tends to corrupt, absolute power corrupts absolutely" - Lord 
  Acton
Related commands:
  
  exit - Exit the shell
  crontab - Schedule a command to run at a later time
  chroot - Run a command with a different root directory
  if - Conditionally perform a command
  nohup - Run a command immune to hangups
  repeat - execute a command multiple times 
  su - Run a command with substitute user and group id 
  
  Equivalent BASH command:
  
  exec - Execute a command