Bash 4 1

Bash (GNU bourne-again shell) is the default shell of many Linux platforms, in fact, there are many traditional Unix shell, like tcsh, CSH, Ash, BSH, Ksh, and so on, SHell script is roughly similar, When you learn a shell, the rest of the shell will soon start, and most of the time, a shell script can often be used on many kinds of shells. By learning how to use bash scripting ...

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 ...

If you only want to see the first 5 lines of the file, you can use the Head command, such as: Head-5 passwd If you want to view the last 10 lines of a file, you can use the tail command, example: [Root@localhost software]# head-5/etc/ Passwdroot:x:0:0:root:/root:/bin/bash &http://www.aliyun.com/zixun/aggregation ...

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 ...

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 ...

In the daily link to the Silicon Valley, the most fresh information! Silicon Valley here refers to a typical and innovative business representative abroad. 1. The extended scale of employee strikes in the Amazon has expanded http://tech.ifeng.com/a/20140925/40822386_0.shtml Beijing time September 25, according to Bloomberg reports, the Amazon German staff strike expanded to the fifth Logistics center, Time also extended a day. Ver.di, Germany's largest trade union, hopes to put pressure on Amazon to let the online retailer ...

You can use the flexibility inherent in the command shell of Linux to create scripting languages that help you simulate DOS commands in a Linux environment. 　　 　　The specific approach is as follows. If you are an IT support expert, you like the command of Windows very much, when you first use the Linux command line, you may soon find yourself confused. The DOS commands you've been familiar with for a long time don't exist in Linux. So you will find yourself facing a terrible task: to learn and be familiar with the whole ...

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 ...

In the daily link to the Silicon Valley, the most fresh information! The "Silicon Valley" here refers to the typical and innovative business representatives abroad. 1. FBI director of the United States: Apple iOS 8 encryption function is not reasonable <http://tech.sina.com.cn/it/apple/2014-09-26/07519648558.shtml> Komi said: "I very much agree, We should get a search warrant from an independent judge before we can get the contents of anyone's wardrobe or smartphone. But ...

"Science and Technology" September 29 news, recently, small series has been sharing with you the torch of Light 2 Ash Mage and Berserker warriors of some experience, today will bring you a game in another ruthless role-the engineers add to the discussion. This engineer is not a small robot to go in front of the anti-strange, his wretched hiding behind the output skills, but can be like a soldier to charge into the monster heap, an indiscriminate violent roll face flow. The player who likes to be a fan of Zhang Fei in the battlefield will certainly have a preference for this role. Words do not say more, the following share with you some of the engineers ...