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Working with files, terminal and AI on a Mac.
Chmod a directory on a Mac, and why folders need the run bit
How to chmod a directory on a Mac: why folders need the execute bit, what write really controls, the fourth digit, and the ACL layer a mode cannot express.
Chmod for an SSH key: the permission ssh refuses to work without
What chmod for an SSH key actually has to satisfy on a Mac: the exact bits ssh tests, why config and authorized_keys follow different rules, and what to run.
chmod on a Mac: changing who can read and write a file
A practical guide to chmod on a Mac: octal and symbolic modes, what r and x mean on a directory, and the four reasons chmod appears to do nothing.
Chmod: read, write and execute in plain words
What chmod actually authorises with r, w and x, why deleting a file depends on the folder rather than the file, and where the three letters stop being the whole answer.
Chmod recursive: change a whole folder without flattening it
Chmod recursive applies one mode to files and folders alike, which is why it breaks things. The three ways to recurse, the symlink default that flips on a Mac, and what to record first.
MCP client: the app that hands your files to the model
An MCP client is not something you install. Picking one decides what the model can reach, who confirms each call, and which protocol features exist at all.
Add a folder to PATH on a Mac so the command is found
How to add to PATH on a Mac and make it stick: which zsh file runs when, why path_helper pushes additions to the end, and the four places that actually work.
Add OneDrive to the Mac Finder sidebar and stop hunting for it
How to add OneDrive to the Mac Finder sidebar, why the entry sometimes vanishes, and what a Favorites shortcut can and cannot tell you about a synced file.