An utility to print a ruler, so you can count letters in environment without any ruler or position.
$ ruler
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1 2 3 4 5 6 7 8
$ ruler 72
123456789012345678901234567890123456789012345678901234567890123456789012
1 2 3 4 5 6 7
BSD-2-Clause