this post was submitted on 03 Nov 2023
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Programming
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Each instance of . is a relative level to your current directory. ‘cd .’ changes your directory to your current directory. ‘cd ..’ (edit: on mobile this keeps changing to three periods but it should just be two) changes it to the directory above, ‘cd ….’ would change it to three directories above. This is standard in *nix (Unix and Linux) operating systems
Edit 2: this is very wrong
That's definitely not standard. Maybe your distro or shell has this configured that way. The actual standard thing is that each directory has entries for
.and.., as you can see inls -a.Yup, that's what I've always understood. Seems like this is zsh-specific, since using the default Terminal app with zsh also works. Do you know if other shells (fish, csh, etc.) support this syntactic sugar? Anything else zsh has that I should know?
Eshell, the Emacs shell, supports this feature out of the box, regardless of the OS it runs on.