I use sudo su command to do something in Mac OS X but don’t know how to switch back. Hope you guy can do me a favour. Answer Type exit. This will logout the super user and go back to your account. AttributionSource : Link , Question Author : Hillman , Answer Author : Eric … Read more
I have a file on server A (which is behind a NAT so not directly addressable). The file needs to be copied to server B in a directory restricted to root. I have an account on server B with sudo privileges. What is the syntax for the scp command? Answer First, you need to copy … Read more
I recently got into trouble because of this. $sudo vim /etc/motd [sudo] password for bruce: bruce is not in the sudoers file. This incident will be reported. Is there a way to check if I have sudo access or not? Answer Run sudo -v. It is usually used to extend your sudo password timeout, but … Read more
Why typing sudo cd whatever won’t change the directory? Answer cd is a shell builtin. sudo only works with executables. You could do sudo sh -c ‘cd dirname’ but as soon as the shell exits, you’re returned to the directory you started from. If you say what it is you’re trying to accomplish then I … Read more
On busy days, I’d like to run $ ./configure && make && sudo make install && halt on the night and go to bed, hoping the application would automatically be installed. But what I see the next day is the screen where sudo asks me for the password. So how could I run sudo with … Read more
I want to do: echo “something” >> /etc/config_file But, since only the root user has write permission to this file, I can’t do that. But the following also doesn’t work. sudo echo “something” >> /etc/config_file Is there a way to append to a file in that situation without having to first open it with a … Read more
