Here is the Perl script: https://github.com/8bitsten/public/blob/main/c64/stormtrp/prefix_lines.pl https://github.com/8bitsten/public/blob/main/c64/stormtrp/pr.

Here is the Perl script: https://github.com/8bitsten/public/blob/main/c64/stormtrp/prefix_lines.pl https://github.com/8bitsten/public/blob/main/c64/stormtrp/pr... Perl is ubiquitous (installed on virtually every Linux system) and has had excellent backwards compatibility for decades. It’s hard to beat in that combined metric.