$ grep -l "#blog" ~/blog/*

total 4

1. 2018-04-20 Switching Google AdSense Between Desktop and Mobile #blog
2. 2013-08-03 Error 1607: Unable to Install InstallShield Scripting Runtime #blog
3. 2013-05-21 What to Do When You Lose Your Wallet #blog
4. 2013-04-25 RPG Growth Systems and a View of the Future #blog