Well, not really viral, just busier than expected.
Here is a screenshot showing all time traffic stats for this blog.
The absolute traffic volume of this blog isn't very exciting (nor very high). As you probably noticed, what is interesting is the recent spike in traffic. This isn't for a recent post that went modestly "viral", it is a 4 year old post. Out of the blue, for no apparent reason, the 10 useful little bash tricks post has become the most popular post on this blog by far. Huh.