That escape sequence is part of the XTerm control set. When I did echo ^[[21t; > STDOUT.txt 2> STDERR.txt
I get nothing in either file, yet I can see the window title on the screen. Putty is returning it, but I can't seem to capture it.
the first character of that control string is an ESC and I entered it by doing a Cntrl-v first then the ESC key.Update:
Corrected a typo
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