Bash Test Or

Today, after testing a remote AIX host in Java, it suddenly occurred to me that Hadoop was installed on Linux, but did not attempt it on AIX, and wondered if the installation of Hadoop under Aix would be different, so the process was recorded as follows: 1. 　　Install the decompression software on AIX, install Java and so on, here do not say. 2. Download the Hadoop0.21.0 version, and extract to a specific directory, where the decompression to/home/cqq/hadoop-0 ...

I believe you have seen in many places "Docker based on Mamespace, Cgroups, chroot and other technologies to build containers," but have you ever wondered why the construction of containers requires these technologies? 　　Why not a simple system call? The reason is that the Linux kernel does not have the concept of "Linux container", the container is a user state concept. Docker software engineer Michael Crosby will write some blog posts and dive into Docke ...

The friendly interactive shell, just like its name, fish is a very friendly shell, highly recommended! Use the command sudo apt install fish to install it. When you are done, run the command fish to switch to fish and exit back to bash. A brief introduction to its advantages: automatic completion, syntax highlighting the automatic completion of bash is only the completion of the full command, the path, if you want to complement the full variable, parameters, etc., usually need to use complex combination ...

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This page will teach you how to design your own personalized x (graphics desktop) session by editing the shell script. Desktop environments like Gnome usually have their own session manager. These session managers allow you to set what additional programs will be loaded at startup by providing a graphical interface. However, knowing how to create an X session script allows you to have greater flexibility in defining your desktop environment, whether you use Gnome, KDE, XFCE, Openbox, or any of the less-known window managers, like Blackbox or fvw ...

"Editor's note" Vidar Hokstad is very experienced in Docker use, especially in the absence of data loss, the use of Docker to create a repeatable build on the experience, in this blog, he summed up the development of the Docker container 8 modes. Docker is now my favorite tool, and in this article I will outline some of the patterns that recur during my use of Docker. I do not expect them to bring you many surprises, but I hope that these can be useful to you, I am very willing to communicate with you in the use of ...

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Now let's do something interesting! We will create an SE Linux user and assign him a role and then set the default security context for the user. In the old SE Linux environment, the encapsulation program was set up with VIPW (SVIPW), for example, Useradd (Suseradd), passwd (SPASSWD), CHFN (SCHFN), and so on, in the new SE linux environment, These programs have other names. 5.1 Establish a new ...