A nice meme, seen here. But it is a bit difficult for me, because i tend to have dedicated machines for different tasks, so here are two examples from two environments of mine:
My Laptop:
125 ssh 45 cd 41 sudo 33 telnet 27 ifconfig 26 ping 21 ls 14 svn 13 host 13 grep
My Workstation:
118 cd 68 make 64 svn 43 ls 40 vi 23 ssh 18 gvim 16 gcc 15 grep 11 su