an interpreter and language known as 'bash' with pipes and whatnot
which interacts with Linux and its filesystem in a nice way
and is made useful by like 200 different tiny programs/unix commands/etc you need to know how to use, like 'cd' or 'ls' or 'ssh' or 'man'
https://en.wikipedia.org/wiki/List_of_GNU_Core_Utilities_commands
https://en.wikipedia.org/wiki/List_of_Unix_commands
ur welcom
voxpoplar wrote
I actually use fish