how to change the window title dynamically

[lin q]

Hi,
  I wonder how to change the window title synamically like command prompt to 
list the full path? Google returns me such command,

print -nP -u2 "\033]0;%n@%m:%~\a"


But "print" is not recognized, I tried printf, it says -n and -u not 
recognized.

Thanks.

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