Looks like at least IBM AIX and HP-UX don't have the tac command by default.Is there a way to do this using just basic posix standard shell utilities available on all UNIX systems?Furthermore, is SMCcoreu package on Solaris (which provides tac on SunOS, installed by default?
Is there a standard POSIX way of doing `tac`
solaris;aix;posix;hp ux