Because Ubuntu locks the root account by default, you cannot use su to become root as you would in other Linux distributions. Instead, start your commands with sudo. “Sudo” stands for “substitute user do.” When you add sudo to the beginning of a command, the command will run as root.  For example: sudo /etc/init.d/networking stop stops the network service, and sudo adduser adds a new user to the system. Both of these tasks require root access. You will be prompted to enter your password before sudo runs the command. Linux stores your password for 15 minutes so you won’t have to keep typing it. For security reasons, Ubuntu does not recommend using “sudo” to open programs with GUIs. Instead, type gksudo before the command that launches the program.  For example: type gksudo gedit /etc/fstab to open the "fstab" file in GEdit, an editing program with a GUI. If you’re using the KDE Window Manager, use kdesudo instead of gksudo. If you are an advanced user who needs access to an actual root shell to run specific scripts, simulate a root shell with sudo –i. This command will give you superuser access with root’s environment variables.  Enter the command sudo passwd root. This will create a password for root, essentially “enabling” the account. Don't forget this password. Type sudo -i. Enter the root password when prompted. The prompt will change from $ to #, indicating you have root access. If you are setting up an account for someone who does not currently have root access, you will need to add their username to the sudo group. To do this, type usermod -aG sudo username (but replace “username” with the correct username).
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One-sentence summary -- Press Ctrl+Alt+T to open a terminal window. Type sudo before the rest of your command. Type gksudo before running a command that opens a program with a Graphical User Interface (GUI). Simulate a root environment. Give sudo access to another user.

Q: Not all chemotherapy treatments cause hair loss. One of the best ways to cope with chemo-related hair loss is simply to be prepared for it. Talk to your oncologist and ask if you should expect hair loss due to your treatment. If the answer is yes, then expect to begin losing your hair anywhere from seven to twenty-one days after your first treatment. Avoid bleaching, perming, or other harsh treatments to your hair (even preceding your chemotherapy treatment) to give yourself the best chance of keeping it. You should also use a soft brush and a very gentle shampoo, such as baby shampoo, to try to keep your hair. Baby shampoo will also help reduce any associated scalp itching. You may also experience itchiness on your scalp. An over-the-counter hydrocortisone cream can help reduce scalp itch. Apply as directed. You can ask your local pharmacist for help in picking this out at the drugstore. You can help control itchiness caused by the hair-shedding process by simply shaving your head when the symptom starts. For some patients, getting the hair loss process over with by shaving their heads also helps prevent the embarrassment and anxiety related to the shedding process and associated patchiness. Many people who lose their hair after cancer chose head coverings such as a scarf, turban, hat, or wig. You can find scarves in beautiful patterns and fabrics, as well as fun and fancy hats. Some insurance plans will even cover the cost of a head covering. If you do experience hair loss (or shave your head), it is important that you protect your scalp from both sunlight and extreme cold. Make sure to put on sunscreen before going out in sunlight, even if you are wearing a head covering.
A: Ask your doctor if you should expect hair loss. Treat your hair gently. Apply a hydrocortisone cream for any itchiness. Consider shaving your head. Cover your head. Wear head protection.

Article: You can use more dish soap to make more slime, but you'll need to add more cornstarch as well.  Consider using some colored or scented dish soap. For a more traditional slime, consider green dish soap. You can also use shampoo instead of dish soap. The thicker the shampoo, the better!
Question: What is a summary of what this article is about?
Squeeze 1½ tablespoons (22.5 milliliters) of dish soap into a bowl.

Problem: Article: If the video in question was shared from Facebook, you can't use this section to save the video. However, if you or a friend uploaded the video to the conversation from a phone, tablet, or computer, you should be able to save it from the conversation onto your Camera Roll. Tap the Messenger app icon, which resembles a white speech bubble with a blue lightning bolt in it, on the phone or table onto which you want to save your video. If you aren't logged into Messenger, enter your login information when prompted before proceeding. Select the conversation to which the video was sent, then scroll to the video. Doing so will cause a few different options to appear, one of which is a toolbar at the bottom of the screen. It's in the toolbar at the bottom of the screen. Doing so will prompt the video to save onto your Camera Roll, though it may take a few minutes for the video to appear there.  On Android, you'll tap Save Video here. If the video doesn't download after a couple of minutes, re-open Messenger and try again, making sure to leave Messenger open until the video downloads.
Summary: Make sure that the video you want to save was sent from a Camera Roll. Open Messenger. Go to the video. Long-press the video. Tap Save.

Article: It is rarely necessary to soak apples or use ingredients other than tap water or vinegar to wash them. Fancy waters that involve soaking apples can change their taste. Stick to tap water for the most part, and vinegar if your apples are very dirty. Elaborate washes will do little to clean apples. Many people think organic apples do not need to be washed. While organic apples use fewer pesticides, they are still prone to environmental bacteria and can be contaminated during transport. Even organic apples should be washed under tap prior to eating. Moldy produce does not have to be discarded if only a small corner is infected with mold. If you see a small part of your apple is moldy, cut away that portion with a knife. Unless an apple is completely covered in a layer of fuzzy mold, there is no need to throw it away.
Question: What is a summary of what this article is about?
Avoid fancy washes. Wash apples even if they're organic. Do not automatically throw out moldy produce.