nohup
Run a command immune to hangups, runs the given Command 
  with hangup signals ignored, so that the command can continue running in the 
  background after you log out.
SYNTAX
      nohup [Command [Arg]...]	       
Run command such that it will ignore hangup signals.
Note that commands may set their own response to hangups, overriding nohup.
Without an argument (allowed in only a shell script), causes the shell to ignore hangups for the remainder of the script. `nohup' does not automatically put the command it runs in the background; you must do that explicitly, by ending the command line with an `&'.
nohup is a tcsh shell command.
"Love is a perky elf dancing a merry little jig and then suddenly he turns on you with a miniature machine gun" - Matt Groening
Related commands:
  
  chroot - Run a command with a different root directory
  exec - Execute a command
  if - Conditionally perform a command
  nice - Change job scheduling priority 
  su - Run a command with substitute user and group id
  
  Equivalent BASH command:
  
  nohup - Substitute user identity