Getting files back
The save succeeded. The file exists. It is just not where you think, and the app knows where it put it.
File → Open Recent in the app you saved from. The file is at the top of that list, and opening it reveals the real location — hover the title bar, or ⌘-click the filename in the title bar to see the full path as a menu.
That title-bar trick answers this whole problem in three seconds and almost nobody knows it.
The save dialog remembers the last folder used — per app. If anything else was saved from that app last week into some deep folder, your file followed it there. The dialog also defaults to collapsed view (⌘. expands... actually the chevron next to the filename), hiding where it is pointing.
Expand the save dialog permanently by clicking the disclosure chevron once; it stays expanded.
You know exactly when you saved it — within the last few minutes:
find ~ -type f -mmin -15 -not -path "*/Library/*" 2>/dev/null
That lists everything you created or changed in the last 15 minutes, which is a very short list.
~/Documents for many, a container for sandboxed apps)Some Mac App Store apps default their save dialogs inside their own container. The file is then in ~/Library/Containers/<app>/Data/…, invisible to Spotlight, and looks exactly like a failed save. find ~/Library/Containers -mmin -15 -type f finds it.
⌘-click the filename in the window's title bar. The menu that appears is the full path.
It remembers the last folder used in each app. Whatever was saved there last set the default.
Everywhere keeps track of every file on your Mac — including the folders Spotlight hides and drives you have unplugged. Free for a day, then $19 once.
Download for Mac