Do you ever find yourself wanting to open several terminal windows and send the same commands to all of them? I’ve had this need many times, and I’ve never found a completely satisfactory solution. I’ve also known a lot of people who’ve written various sets of scripts to help them accomplish such tasks.
In no particular order, here are a few ways I’ve done this in the past:
while read cmd; do screen -X at remote# stuff "$cmd"; done
Here are some I’ve heard about, but never used:
Of course, in many cases a technology like Chef or Puppet provides the true solution. But a lot of the MySQL users I’ve known haven’t grown to the point that they want to spend the upfront time and effort to learn and deploy something like that. They’re investing in development instead, and bearing the cost of a little less efficient systems administration process.
What’s your favorite technique for doing lots of things all at once?