Ask HN: What is that code snippet / command that you Google every single time?

[guillegette]

Example: every time I update my .gitignore I can't remember the commands that I need to run on git to remove the cached files before doing "$ git add" again.. My brain seems not able to incorporate such information.

[pseudo_monkey]

Every time I want to forward a port through ssh I need to remind myself the formatting of the command.