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Linux adds update source method
In Linux, an update source refers to the source used to obtain software updates and patches. If you want to know more about Linux, you can read the articles below this topic.
How to add update source in linuxAdd steps: 1. Open a terminal window; 2. Use a text editor (such as vi or nano) to open the /etc/apt/sources.list file, and use the "sudo vi /etc/apt/sources.list" command to open the file. And add a new update source; 3. Save and close the file; 4. Use the "sudo apt-get update" command in the terminal window to update the update source list to add a new update source.
How to add a user in linux and grant root permissionsHow to add a user and grant root permissions under Linux: 1. Add a user and use the adduser command to add an ordinary user; 2. Modify the [/etc/sudoers] file, find the following line, and remove the previous comment [#] to grant it. root authority.
How to add routing commands in linuxLinux add routing command method: 1. Use the route command to add a default route "csharpCopy coderoute add default gw", and then add a static route; 2. Use the ip command to add a default route Route "csharpCopy codeip route add default via dev " and then add a static route Depend on. 
How to change the root user name in Linux1. Taking CentOS as an example, after logging in, modify /etc/passwd and /etc/shadow, change the root starting on the first line to a new user name (such as admin), and save through wq! after modification. 2. After modifying and saving, it will take effect after restarting the server. You can check the permissions of the file and see that the account column has changed to admin, as follows: Note: The default user with the highest administrative authority in Linux is root, uid is 0. Only uid is recognized in the system, so as long as uid is 0, the system is regarded as the highest administrative user. However, there may be certain problems with applications. Some software uses the root user by default, so if you have limited understanding of software applications,
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