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I'm trying to change my directory to /boot/efi, but running sudo cd /boot/efi does nothing. I'm on fedora 23. Is there a more powerful command for this?

2 Answers 2

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cd is a shell builtin, and sudo only works with programs.

Try using either su - or sudo -i before changing directory. These will elevate your login session to that of the root user. Once finished making changes, make sure to type exit to return to being a normal user.

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  • That works, thanks, but there's a file in there, grub.cfg, and i'm trying to copy it to my home folder, which works after doing sudo -i and using the cp command, however i don't have permission to open that file (it does work with sudo vim, but how do i change permissions on that file?) Commented Jul 4, 2016 at 20:31
  • sudo chown username filename should work.
    – clk
    Commented Jul 4, 2016 at 20:34
  • Can i also keep root as the owner but add me as readwrite permissions? Commented Jul 4, 2016 at 20:37
  • sudo chmod 666 filename then to allow rw- permissions to everyone.
    – clk
    Commented Jul 4, 2016 at 20:39
  • Cool, that works! I also looked it up and you can also do: sudo chown :frederik grub.cfg to change the group And sudo chmod g+r grub.cfg to give that group read permission Thanks a lot! sudo chmod 640 grub.cfg also works for changing the permissions (in this case rw for root and r for group, none for others. Commented Jul 4, 2016 at 20:50
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You can do this to cd as super user:

sudo -s
cd directory
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  • Please note that this does not maintain the environment.
    – FelixJN
    Commented Jan 28, 2021 at 11:05

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