I wanted to retrieve yesterdays date with a format of YYYYMM
This was solved in FreeBSD like this:

(SuSE) Linux doesn’t know the -v option
The same thing in Linux could be done like this:

Why the difference?

My less command of my FreeBSD installation doesn’t show the ansi colors embedded in the Rails log file. Well it does shows the codes, but I don’t want to see those.

I found a simple solution for this:

Put the code above in the ~/.bashrc/ file and less will finally show the colors…!