Haha. Mostly it is dozens, probably hundreds of little things over time when turning to the shell proved highly productive and effective. The shell is surprisingly really, really good at processing text (using the good 'ol unix tools), and it's amazing how often "text processing" type problems come up. Whether you are doing find/replace on source code, looking for where certain strings are used/defined, or curling some page and extracting data out of it, the shell can often provide very quickly and effectively. The bonus feature is that people are often very impressed when you whip out the shell skills and nail something they thought would be difficult.

I also started capturing most tasks as bash functions or aliases in my `~/.bashrc` file. This doubles as both a handy reference for me to look at later to remember how to do something, and automating simple things.