Root

In computing, the

In Unix-like computer OSes (such as Linux), root is the conventional name of the user who has all rights or permissions (to all files and programs) in all modes (single- or multi-user). Alternative names include baron in BeOS and avatar on some Unix variants.[2] BSD often provides a toor ("root" written backward) account in addition to a root account.[3] Regardless of the name, the superuser always has a user ID of 0. The root user can do many things an ordinary user cannot, such as changing the ownership of files and binding to network ports numbered below 1024.

Root

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The name root may have originated because root is the only user account with permission to modify the root directory of a Unix system. This directory was originally considered to be root's home directory,[4] but the UNIX Filesystem Hierarchy Standard now recommends that root's home be at .mw-parser-output .monospacedfont-family:monospace,monospace/root.[5] The first process bootstrapped in a Unix-like system, usually called init, runs with root privileges. It spawns all other processes directly or indirectly, which inherit their parents' privileges. Only a process running as root is allowed to change its user ID to that of another user; once it has done so, there is no way back. Doing so is sometimes called dropping root privileges and is often done as a security measure to limit the damage from possible contamination of the process. Another case is login and other programs that ask users for credentials and in case of successful authentication allow them to run programs with privileges of their accounts.

It is often recommended that root is never used as a normal user account,[6][7] since simple typographical errors in entering commands can cause major damage to the system. Instead, a normal user account should be used, and then either the su (substitute user) or sudo (substitute user do) command is used. The su approach requires the user to know the root password, while the sudo method requires that the user be set up with the power to run "as root" within the /etc/sudoers file, typically indirectly by being made a member of the wheel,[8] adm,[9] admin, or sudo group.

The

CA owners with self-signed root CA certificates included in the Chrome Root Store must satisfy the requirements defined in this policy, including taking responsibility for ensuring the continued compliance of all corresponding subordinate CAs and delegated third parties participating in the Public Key Infrastructure (PKI).

Google includes or removes self-signed root CA certificates in the Chrome Root Store as it deems appropriate at its sole discretion. The selection and ongoing inclusion of CA certificates is done to enhance the security of Chrome and promote interoperability. CA certificates that do not provide a broad service to all browser users will not be added to, or may be removed from the Chrome Root Store. CA certificates included in the Chrome Root Store must provide value to Chrome end users that exceeds the risk of their continued inclusion.

It is expected that a future version of this policy will identify a phase-out plan for existing root CA certificates included in the Chrome Root Store that do not satisfy the requirements above to align all included CAs on these principles.

If the CA owner has not yet publicly disclosed an incident, they must notify chrome-root-program [at] google [dot] com and include an initial timeline for public disclosure. Chrome uses the information in the public disclosure as the basis for evaluating incidents.

When you first create an Amazon Web Services (AWS) account, you begin with a single sign-in identity that has complete access to all AWS services and resources in the account. This identity is called the AWS account root user and is accessed by signing in with the email address and password that you used to create the account.

We strongly recommend that you don't use the root user for your everyday tasks and that you follow the root user best practices for your AWS account. Safeguard your root user credentials and use them to perform the tasks that only the root user can perform. For the complete list of tasks that require you to sign in as the root user, see Tasks that require root user credentials.

Like a sequel to the prescient warnings of urbanist Jane Jacobs, Dr. Mindy Thompson Fullilove reveals the disturbing effects of decades of insensitive urban renewal projects on communities of color. For those whose homes and neighborhoods were bulldozed, the urban modernization projects that swept America starting in 1949 were nothing short of an assault. Vibrant city blocks - places rich in culture - were torn apart by freeways and other invasive development, devastating the lives of poor residents. Fullilove passionately describes the profound traumatic stress- the "root shock"that results when a neighborhood is demolished. She estimates that federal and state urban renewal programs, spearheaded by business and real estate interests, destroyed 1,600 African American districts in cities across the United States. But urban renewal didn't just disrupt black communities: it ruined their economic health and social cohesion, stripping displaced residents of their sense of place as well. It also left big gashes in the centers of cities that are only now slowly being repaired. Focusing on the Hill District of Pittsburgh, the Central Ward in Newark, and the small Virginia city of Roanoke, Dr. Fullilove argues powerfully against policies of displacement. Understanding the damage caused by root shock is crucial to coping with its human toll and helping cities become whole. Mindy Thompson Fullilove, MD, is a research psychiatrist at New York State Psychiatric Institute and professor of clinical psychiatry and public health at Columbia University. She is the author of five books, including Urban Alchemy.

A root canal treatment is a dental procedure to remove inflamed or infected pulp on the inside of the tooth which is then carefully cleaned and disinfected, then filled and sealed. Root canal treatment is designed to eliminate bacteria from the infected root canal, prevent reinfection of the tooth and save the natural tooth.

There's no need to be worried if your dentist or endodontist prescribes a root canal procedure to treat a damaged or diseased tooth. Millions of teeth are treated and saved this way each year, relieving pain and making teeth healthy again.

Inside your tooth, beneath the white enamel and a hard layer called dentin, is a soft tissue called pulp. This tissue contains blood vessels, nerves and connective tissue, which help grow the root of your tooth during its development. A fully developed tooth can survive without the pulp because the tooth continues to be nourished by the tissues surrounding it.

A modern root canal treatment is nothing like those old sayings! It's very similar to a routine filling and can usually be completed in one or two appointments, depending on the condition of your tooth and your personal circumstances. Getting a root canal is relatively painless and extremely effective. You'll be back to smiling, biting and chewing with ease in no time.

All About Root CanalsA root canal (also known as an endodontic treatment) is a serious procedure, but one that specialists handle every day. Before engaging in any type of dental work, it's important to know the facts about root canals.

Since patients are given anesthesia, a root canal isn't more painful than a regular dental procedure, such as a filling or getting a wisdom tooth removed. However, a root canal is generally a bit sore or numb after the procedure, and can even cause mild discomfort for a few days.

Root canals are needed for a cracked tooth from injury or genetics, a deep cavity, or issues from a previous filling. Patients generally need a root canal when they notice their teeth are sensitive, particularly to hot and cold sensations.

It's necessary to have endodontic or root canal treatment when the inside of your tooth (the pulp) becomes inflamed or infected as a result of deep decay, repeated dental procedures, faulty crowns or a crack or chip in the tooth. Trauma to your tooth may also cause pulp damage even if the tooth has no visible chips or cracks. If pulp inflammation or infection is left untreated, in can cause pain or lead to an abscess. 2990b30de8