So, I think the title is self-explanatory. I'm a beginner on Linux, I've been trying to install Steroids (test environment for hybrid APP's) following this tutorial (the second, from installation), and now whenever I try to use SUDO this message appears:
This problem probably occurred after you ran the command below ( source ):
sudo chown -R 'whoami' 'npm -g bin'
When you use the chown command with the -R option, you tell the system to change the owner of files and group information recursively in their subdirectories and files. Which certainly affected sudo .
To fix this you should reboot the system and go into recovery mode to reverse this process.
Fromthebootmenu,selectrecoverymode,itisusuallythesecondbootoption.
After selecting the recovery mode and waiting for all the boot processes, you will be shown a few options. In this case, you should initialize choosing to open a shell as root .
In recent versions of Ubuntu, the file system is mounted read-only, so you need to type the following command to reassemble as read and write, which will allow you to make changes:
mount -o rw,remount /
Once you have done this, you will be in the terminal as superuser, type:
# mount --all
# chown root:root /usr/bin/sudo
# chmod 4755 /usr/bin/sudo
After running the above commands, exit the session:
exit
This will take you back to the recovery menu.
Choose to resume a normal startup. You should then be able to use sudo again.
Possibly you have not set the root password, try to do this:
$ sudo passwd root
Type the password for the root user then try installing the packages you want.
If it does not work check the permissions of the sudo file
$ ls -l /usr/bin/sudo
And put it there
Ok, try logging in as root
$ su root
If you can enter enter the commands
$ chown root:root /usr/bin/sudo
$ chmod 4755 /usr/bin/sudo
If you can not, you will have to go into recovery mode and type these two commands that I have passed.
To enter recovery mode: link