When are you using the command line? I use a python script and a change to my
HISTTIMEFORMAT to keep track of when I am active on the command line. Since I use vim, this means that every time I launch my text editor along with every time I run a command is recorded. This is my punch card since I got this computer in July, along with a punchcard of just commands that start with git and just commands that start with vim.
It’s interesting to see that I open Vim on Mondays much more than I commit code on Mondays. I think I need to spend some time figuring out how to make Mondays a day with more commits.