cursor blinking removal in terminal, how to?

You can hide and show the cursor using the DECTCEM (DEC text cursor enable mode) mode in DECSM and DECRM:

fputs("\e[?25l", stdout); /* hide the cursor */

fputs("\e[?25h", stdout); /* show the cursor */

Just a guess: try to use a proper number of '\b' (backspace) characters instead of '\r'.

== EDIT ==

I'm not a Linux shell wizard, but this may work:

system("setterm -cursor off");
// ...display percentages...
system("setterm -cursor on");

Don't forget to #include <cstdlib> or <iostream>.

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