Generating cows with IO.popen()
I find the subject of starting and interacting with other OS processes fascinating. A few years ago I wrote a never-completed series on the many ways to spawn off processes…
Safely executing commands with user data
Do you ever need to call out to a shell command with some user-supplied arguments? category = ‘riddles’ fortune = `fortune #{category}` Q: What’s the difference between a Mac and…