this post was submitted on 24 Mar 2024
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linuxmemes

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I use Arch btw


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[–] [email protected] 49 points 8 months ago (3 children)
fuck() {
    sudo $(fc -ln -1)
} 

This function takes the last command and puts sudo in front of it. Actually used it in a zoom call at work without thinking and it took a second to realize why everyone was laughing. Not my invention--came across it years ago on stackoverflow or someplace and thought it was funny/useful.

kmirl@tux:~$ ls /root
ls: cannot open directory '/root': Permission denied
kmirl@tux:~$ fuck
[sudo] password for kmirl: 
bin  debs  docs  Mail 
[–] [email protected] 29 points 8 months ago

Considering the function name, here’s an obligatory thefuck plug

[–] [email protected] 18 points 8 months ago (2 children)

Isn't this the same effect as just running 'sudo !!' ?

[–] [email protected] 13 points 8 months ago (2 children)

According to this super user question, someone said that !! won’t work in a function, so you must use the fc -ln -1 command in a subshell instead. Note the response that says eval shouldn’t be used (not sure why)

[–] [email protected] 8 points 8 months ago (1 children)

Yeah but instead of a function you just make it an alias.

[–] [email protected] 1 points 8 months ago

Oh good point, I didn’t think about that

[–] [email protected] 4 points 8 months ago

Eval shouldn't be used on userinput. Meaning that if smb other than you may use this to change the system he could put malicious code in the eval part.

Probably doesn't matter on shell level

[–] [email protected] 3 points 8 months ago (1 children)

no because it takes the previous command and adds sudo to it right?

[–] [email protected] 6 points 8 months ago* (last edited 8 months ago)

!! is a shortcut for whatever the last command was ~~is it not?~~

E: https://devhints.io/bash#history

[–] [email protected] 15 points 8 months ago* (last edited 8 months ago)
alias fuck='sudo $(fc -ln -1)'
[–] [email protected] 25 points 8 months ago (2 children)

Lazy vim way I do it:

ggVG"wY:q! followed by sudo !! then VG"wp:x

Grab entire file and stuff it in register W

Exit file

Reopen sudo

Select all and replace with register W them write

[–] [email protected] 27 points 8 months ago (1 children)

Now I understand how the Adeptus Mechanicus feel when they perform a ritual power-on.

[–] [email protected] 10 points 8 months ago

It's funny how years of use make that so intuitive but spelled out it's a garbled mess

[–] dukk 10 points 8 months ago (1 children)

Lazier way:

:w !sudo tee %

[–] [email protected] 2 points 8 months ago

Yeah learning about tee from this thread honestly.

It's been interesting realizing I had such a useful tool at my disposal but never knew

[–] [email protected] 15 points 8 months ago (8 children)

Is there an editor that can request root privileges without restarting it? That would be quite useful.

[–] [email protected] 11 points 8 months ago (1 children)

In vim, in normal mode you can do: :w !sudo tee %

[–] [email protected] 2 points 8 months ago (1 children)

Apparently that doesn't work in NeoVim, so recently I installed the suda plugin.

Personally, I just doas nvim and then the file name that needs root access, but it's a handy plugin in case I forget.

[–] [email protected] 1 points 8 months ago

??? I used this in neovim twice today

:w !sudo tee % then reload when it asks.

[–] [email protected] 9 points 8 months ago

i use micro

[–] [email protected] 5 points 8 months ago

It's a simple trick in Vim:

https://stackoverflow.com/a/7078429

For the lazy: :w !sudo tee > /dev/null %

[–] [email protected] 4 points 8 months ago
[–] [email protected] 4 points 8 months ago* (last edited 8 months ago)

micro ftw, no need to even memorize a command, it'll just ask if you want to use sudo

[–] [email protected] 4 points 8 months ago* (last edited 8 months ago)

Yeah, in emacs you use tramp to open the file with /sudo::

[–] [email protected] 4 points 8 months ago

kate does this in KDE, but it's not cli.

[–] [email protected] 11 points 8 months ago (2 children)
:w !sudo tee %

Warning: does not work for neovim

[–] [email protected] 2 points 8 months ago (1 children)

Neovim, the one true vim, why hast thou forsaken me.

[–] [email protected] 2 points 8 months ago (1 children)

Iirc the specific reason behind this is

  • sudo by default requires a tty to run
  • vim's bang spawns a tty to execute commands
  • nvim's bang executes the command directly, then pipes the output to nvim

As a result, sudo (without args) can't work in nvim as it doesn't have a tty to prompt the user for passwords. Nvim also used to do what vim did, but they found out spawning the tty was causing other issues (still present in vim) so they changed it.

[–] [email protected] 1 points 8 months ago* (last edited 8 months ago)

There must be more to this. I just launched a terminal and created a file to test with nvim on arch and it works perfectly fine.

Take a file, sudo chown root:root filename, sudo chmod 700 filename, edit with nvim and save with :w !sudo tee % then reload. Works fine.

I'm on arch with suckless st.

Edit:

Made a demo vid - https://youtu.be/YKZuAvoSW5g

[–] [email protected] 1 points 8 months ago

sure it works in neovim

I didn't do any editing since it's just to prove a point, but I think it does fine.

[–] [email protected] 11 points 8 months ago (1 children)

Kwrite/Kate asks you for password. Seriously, why can't they all just use pkexec or some abstraction of it?

Sadly, i currently borked all Qt apps on my Gtk setup.

[–] [email protected] 2 points 8 months ago (1 children)

So does Micro. Nano... Nano does not.

[–] [email protected] 2 points 8 months ago

Eh, on console i can just do ssu nano <file>. Graphical editors are in question.

[–] [email protected] 6 points 8 months ago

One of the many reasons why I use micro

[–] [email protected] 5 points 8 months ago (1 children)

C-x C-f /sudo::/path/to/file

[–] [email protected] 3 points 8 months ago

I love Emacs. Thanks for teaching me someyhing today

[–] [email protected] 4 points 8 months ago* (last edited 8 months ago)

Use suda.vim for automatically dealing with such cases. Works with neovim as well.

I'll also recommend adding the following to your init.lua or some config file because suda doesn't play nicely with nvim -d or vimdiff.

-- Disable Suda in diff views
if not vim.api.nvim_win_get_option(0, 'diff') then
    vim.g.suda_smart_edit = 1
end

The vimscript version of the same would be:

" Disable Suda in diff views
if ! &diff
    let g:suda_smart_edit = 1
endif
[–] [email protected] 4 points 8 months ago* (last edited 8 months ago) (1 children)

I am here for one reason and one reason alone: source anime is Watamote, episode 12 @18:36

Tomoko tries to approach a girl, but the wind confuses her and she runs away in embarrassment, even though the girl was really friendly and would have liked to talk to her.

In the meme, this scene is used to parallel the feeling of an external system blocking an operation that both participants would agree to.

A similar feeling could be memed with the "myth of consensual sex" format.

[–] [email protected] 4 points 8 months ago

sudoedit is more secure btw. Many editors are not built to be ran as root, and this copies the file to a temo directory, edits it without root, and then overwrites the original file on save with root.