For existing accounts, we can also do the following. Like the basic permissions discussed earlier, they are set using an octal file or through a letter symbolic notation that indicates the type of permission. Other users can be added to the group later.
Lori Kaufman June 6, However, by default, any user can access any home directory. When you add a new user in Ubuntu, the adduser utility creates a new home directory for the new account.
See our article for more information about how file permissions work in Linux. When we say to type something in this article and there are quotes around the text, DO NOT type the quotes, unless we specify otherwise.
You can easily change the permissions for your home directory to protect your private files. Type the following line at the prompt and press Enter.
At the beginning of the line, the permissions for the file are listed. As said in our article about Linux permissions: You can ignore the first, and then there are 3 sets of 3. The first set is for the owner, the second set is for the group, and the last set is for the world.
To change these permissions, type the following line at the prompt and press Enter. The chmod command uses octal numbers as one way to indicate permissions. Our article about Linux file permissions uses a different method that requires more steps but may be easier to understand.
Using the octal numbers to specify permissions is a quicker method. Use whichever method with which you are more comfortable. To learn about using octal numbers to set permissions, see this article. Notice that the permissions for world are all dashes. That means that the world cannot read, write, or execute anything in your home directory.
However, users in the same group as you can read and execute files and folders in your home directory. For more information about managing users and groups in Linux, see our article. Now, when other users on the system try to access your home directory, the following dialog box displays.
You can also set up Ubuntu to use specific permissions when setting up the home directory for a new user you are creating.
To do this, you need to edit the adduser configuration file. To do this, type the following command at the prompt and press Enter. You can use a different text editor if you want. The gksudo command is like the sudo command but is used to run graphical programs as root.
The sudo command is used to run command line programs as root. Enter your password in the Password edit box on the dialog box that displays and press Enter or click OK. Close gedit by selecting Quit from the File menu.
You can also click the X button in the upper-left corner of the window to close gedit. Close the Terminal window by clicking the X in the upper-left corner of the window. Now, the files in your home directory will remain private. Just remember that, if there are other users in the same group as you, you might want to take away the permissions for both group and world for your home directory.The sudo command provides a mechanism for granting administrator privileges, ordinarily only available to the root user, to normal users.
This guide will show you the easiest way to create a new user with sudo access on Ubuntu, without having to modify your server's sudoers file. If you want to configure sudo for an existing user, simply skip to step 3.
When I last installed Ubuntu , I made an ext4 partition of around 80 Gb in notebook’s HDD. The problem arouse when I tried to copy something on this partition. I was simply not able to copy anything in it or create a new file. Apparently, I did not have ‘write permission’ on the said.
I always use following way to change into read/write mode. Login in Safe Mode; From the Menu just go to Grub option, it will give a message like Updating grub will mount your system in read/write leslutinsduphoenix.com chose yes to mount your system in read/write mode.
It will update your grub and will exit from Grub menu.; Finally login as root, your system will be in read/write mode.
OpenSSL Certification Authority (CA) on Ubuntu Server. Posted on April 7, ; by Rene Molenaar; One of the things you should do is reducing the permissions on the entire /root/ca folder so that only our root user can access it: # chmod -R /root/ca.
I've just set up ubuntu on a VPS, installed vsftpd, created two users, disabled ssh access and set their home directories to the same thing and restricted them both to only that directory.