how can I read a file from last line to first line on the Unix command line?

• https://stackoverflow.com/questions/48721344/how-can-i-read-a-file-from-last-line-to-first-line-in-shell
• https://www.man7.org/linux/man-pages/man1/tac.1.html – cat vs tac

$ perl -e 'print reverse <>' Input_file

There are also solutions in awk and sed – read the stackoverflow article for those solutions!