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gnome-shell-extension-historymanager-prefix-search

The GNOME Shell Run Command dialog (Alt-F2) and Looking Glass let you cycle through the history of previous commands with the arrow keys, but there's currently no built-in way to search or do autocompletion for commands. With HistoryManager Prefix Search, you can type the beginning of a command, and then hit the PageUp and PageDown keys to cycle through previous commands which match the prefix you typed.