在perl中更改终端输出的字体大小

Question

How does one change the font size of terminal output created via the print command in perl ? The output font color and emphasis (eg, bold) can be changed by using functionality provided by the Term:ANSIColor module (available from CPAN), but I have been unable to locate a module that supports changing the font size. I suspect the solution might involve system calls that modify the behavior of the shell ( bash in my case), but I am not certain which calls would be appropriate in this case.

Answer 1

You cannot. The font size is determined by the terminal emulator; it cannot be changed via control sequences.

(HISTORICALLY, some terminals supported certain VT100 control sequences to enable "double-width" and "double-height" characters. Using these modes required special handling, though -- for instance, double-height characters had to be outputted twice, once for each line -- and these modes are not supported by most modern terminal applications.)