I'm trying to get a handle on how to effectively cycle through my previous commands using Ctrl+R. For instance, if I search for a command that includes 'foo', and I have multiple versions of that command, how do I scroll through them reliably? I also noticed that when I press Ctrl+R again, it seems to start from a different point in my history. How can I become a terminal pro and achieve smooth keyboard navigation while doing this?
2 Answers
The behavior you're experiencing is due to the readline library that your shell uses. When you press Ctrl+R, you initiate a backward search in your command history for a specific string. If you hit Ctrl+R again, it fetches an earlier instance of what you've searched for. To go forward in the search, the default command is Ctrl+S, but beware that in most terminals, Ctrl+S might pause the terminal. You can find more shortcuts and details in the readline man page.
When you hit Ctrl+R, it starts the search from the most recent command. You can keep pressing Ctrl+R after typing to go further back. For going forward, you can use Ctrl+S, but if your terminal stops working instead, you might want to remap it to something like Ctrl+F. Alternatively, you can use the 'history' command to see a list of your previous commands or the history expansion feature in bash using '!' with the command string to quickly access your commands.
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