Can you please indicate me how do you find programs in the terminal without knowing the exact name?
As far as I remember, there was a command line tool that helps the user to find out other programs / command line tools associated to some key words. For example I am logged in an unknown system and I want to open a pdf, I don't know what pdf reader is installed and hence cannot open the pdf from the command line. I thought there was a command line tool that I can call with some keyword, say "pdf" and it shows me for example 7 programs that are in some way associated with "pdf", say mupdf, etc.
Or how do you do when you don't know the system you're working on or if you forgot what you installed?
I searched on google but always landed on something like How to find application's path from command line? which is not what I am asking.