this post was submitted on 26 May 2026
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Always amused me that sudo !! is actually more keypresses (at least on keyboards where typing ! requires holding Shift).
You just blew my mind. sudo [space] [shift] !! [enter] (4+1+1+1+1+1) is one keypress longer than β + home + sudo + space + enter (1+1+4+1+1). In your face, universe.
If you have an actual home key. If it's ctrl+a or (IIRC, AFK) ctrl+β then we're even.
And if we track hand movements then pressing ! twice may be faster than moving to another key.
But yeah, it's not at all clear that sudo !! is faster like you'd expect it to be.
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But it's faster since your hand move less and you can keep shift pressed
I use zsh with the sudo plugin. Double tap esc and your current or last command will be prefixed with sudo.
I don't dabble in black magic. /j
It's actually pretty neat.
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You can also just do a sudo !! the !! is a shorthand for whatever you tried to run previously.
Not all shells support that.
I use fish btw.
I made my own !!
I know what you meant (I have one for fish as well), but I chucked because you looked very enthusiastic about it!
The fish function for !! is super useful though
I don't even know what I use anymore. My distro seems to keep changing it when I reinstall.
echo $SHELL
Lol, thanks. Now I know.
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I learned something new today!
I completely forgot about this one!
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Top text should maybe say copying by, rather than copying then? Since sudo !! will automatically copy the previous command with sudo in front of it, so there's no manual copying involved
Yeah I remembered that after uploading the meme.
I know alt +. inserts the last argument of previous commands. There must be a good list of alt commands somewhere because they're pretty damn useful.
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On my Terminal that just makes it so I can't type anymore, I feel like I'm doing something wrong...
My solution to the problem is CTRL+U, type sudo, CTRL+Y.
If you hit ctrl-s, ctrl-q will unfreeze
Interesting, why is that? Like what feature is that?
Same reason there's a ScrollLock key on keyboards. Didn't always have scrollbars and if the application prints more than you can read, you want to pause that...
THAT'S WHAT IT'S FOR??
Now that I think about it, it does seem pretty obvious.
Short answer, terminals are built on the same technology as physical terminals from the 60s and 70s when controlling the flow of data from the server was a more useful feature.
It's part of the terminal emulator flow control
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Ctrl + S freezes your shell yes. But Alt + S?
Ah indeed, ALT+S does nothing. I must have pressed both before realizing it was frozen.
Need to use the fish shell instead of the others for this to work. (May be a way to enable it in other shells but I'm not sure how)
Cannot find any reference online. What is this supposed to do? Not at a PC right now.
!! Just puts in your last typed command. So if you typed rm -rf /etc, you wouldn't have permission. But if you typed in sudo !! Right after, then you're really fucked.
Ah I wasn't clear -- those, I knew. It's alt+S I don't know. I'm at my machine now and it doesn't seem to do anything on Pop_OS.
Seem to be a fish shell thing.
I tested on my good ole trusty bash and got nothing so I went searching.
EDIT: Clarification : alt+s seems to be a fish shell thing.
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