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  1.  
  2. NAME
  3.  
  4. unset - remove a shell variable
  5.  
  6. SYNOPSIS
  7.  
  8. unset name
  9.  
  10. DESCRIPTION
  11.  
  12. The "unset" command removes the named variable from the shell environment.
  13.  
  14. Variable names are limited to the characters a-z, A-Z, 0-9, _ and may be 31 characters in length.
  15.  
  16. RETURN CODES
  17.  
  18. <0    An error prevented the removal
  19. 0    Successful removal or name not found
  20.  
  21. SEE ALSO
  22.  
  23. set, env