Silly Internet Meme that I don’t quite understand

But hey, all the cool kids are doing it.

Here’s mine, from my work MacBook*:

MacEto:~ blazar$ history|awk '{a[$2]++} END{for(i in a){printf "%5dt%s n",a[i],i}}'|sort -rn|head
23 ls
18 curl
14 cd
11 ssh
10 ps
6 svn
5 open
3 rm
3 ping
3 kill

* Yes, be jealous, I have a MacBook at work. Cool bosses.