*} ${[emailprotected]} variable name matching, matching variable names starting with prefix, output matching variable names: [emailprotected]:~# Echo ${! p*} PAT PATH pipestatus PPID PS1 PS2 PS4 PW PWD [emailprotected]:~# Echo ${[emailnbsp ;p rotected]} PAT PATH pipestatus PPID PS1 PS2 PS4 PW PWD [emailprotected]:~# ${!name[@]} ${!name[*]} The list of array keys. If the name is an array variable, it expands
active developers in domestic universities, including Shanghai Jiao Tong University, who have run the SDN project Neutron in the production environment and provided the VDC function, at the same time, Shanghai Jiao Tong University is still using Cloud Foundry. In addition, engineers from the National Defense University of Science and Technology are helping Chinese supercomputers deploy OpenStack and submit a speech application at the Hong Kong OpenStack Summit.
Figure: OpenStack official pr
Nearly 90% of the information on the Internet is in the form of text, want to add a bright spot to the website, try this trick! Brush Splash, Shang, today this group of Web site is called the use of handwritten font model, or casual rambling, evil charm upright mad, or delicate and orderly, petty bourgeoisie tone, or elegant smooth, xiaojiabiyu, in short style very much.Related articles that may be of interest to you
Big treasure trove of fon
modules (Nova, Cinder, Glance, Keystone, Horizon, Swift) contributed significantly to the downward trend, and here the emphasis is on proportion rather than quantity, In terms of quantity, the difference between versions is not significant, with Nova as an example, from the Havana version of 24% down to today's 10%. This reflects the growing stability of OpenStack's core modules, with more focus on higher levels or functional optimizations.Neutron module has been in a steady state of Ascension,
the conflict.1. The Trove-trove Library provides a set of efficient base collection classes.Gnu.trove.set.hash.THashMap inheritance: Thash, Tobjecthash, Thashmap, with its internal keys and values that are represented by 2 arrays. Its conflict resolution approach uses open addressing, where open addressing requires high space, so its default reload factor, load factor, is 0.5 instead of 0.75. Here's a look
We've already covered the basics of Java and the simple OOP object-oriented programming idea. It means that you are already in the world of Java. But now you, as if a layman, just put his foot into this treasure trove, have not had time to find the treasure inside the treasure. But don't worry, success is always left to those who are prepared, and we're ready for you, so let's go into the treasure trove of
problems, and you can easily prove that something is wrong, but it is hard to prove that it is correct. In that case, that's what scares you, and upgrading is the only option, because even if you don't, you can't prove that the current kernel-to-application collaboration is fine, even though they've been tested at least, but can't you do the same test on the new kernel? You can't stop moving because you are afraid of mistakes.Perhaps you can insist that all things develop themselves to maintain
hopes to help you use the OpenStack front-end to set up and manage your own public cloud or private cloud by providing the necessary guidance information.
Ii. The basic structure of OpenStack
Horizon (Dashboard): To provide users with a graphical Web front-end console for the management of OpenStack resources and services to make them relatively intuitive; Nova: Compute resource pools through virtualization; Neutron: Implement Virtual machine network resource management; Keystone: Identity auth
, which outputs the product of the texture and color:The{Blend Srcalpha OneminussrcalphaSetTexture [_maintex] {Constantcolor[_color] combine texture * contant}}Do exactly the same thing as Vertex + pixel and produce the same resultPass{Blend Srcalpha OneminussrcalphaCgprogram#pragma vertex vert#pragma fragment Frag#include "Unitycg.cginc"struct V2F{FLOAT2 uv:texcoord0;FLOAT4 pos:sv_position;};FLOAT4 _maintex_st;v2f Vert (float4 pos:position, Float2 uv:texcoord0){v2f o;O.pos = Mul (UNITY_MATRIX_M
Auto-Registration // Auto Load file // features, that is, when used, the automatic loading, is better than the current full load, this is his propaganda on-demand loading! If there is no corresponding need pre-loaded things, the default is detect the file is correct, Direct use returninclude for // through class name, according to different standard do load, more internationalization, you progress // in fact, the core technology in this should be the path of Ps0 and
Document directory
Task: display current bash prompt (PS1)
Task: modify current bash prompt
Task: add colors to the prompt
Task: how to make the prompt setting permanent
Tput command
Handy tput commands
Colors {code} code for tput command
Q. How do I change the color of my shell prompt under Linux?
A. YouCan change the color of your shell prompt to impress your friend orMake your own life quite easy while working at command prompt.
In the Linux default shell is Bash.
Your current prom
h.265 versions with the same content, and the size can be larger than GB, the existing player does not support-GB of high-capacity, Erasable CDS (bdxl ).
Up to now, there is still no proper solution. You can add a 4 K resolution video to an existing Blu-ray standard without compromising its compatibility. Although it is not necessary to improve the CD manufacturing process to update the h.265 standard, it is necessary to create a new player to play the new Blu-ray disc. Although some players ca
1. Install mingw
Install it to: C:/mingw. You 'd better download the automatic installation version to mingw.
2. Install msys to the mingw home page to download the latest version of msys: URL: http://www.mingw.org/download.shtmlIn the download list, current-msys is the msys Installer. Download its binary version (BIN) and install it under C:/msys/1.0. Specify the mingw position in the middle.
3. Modify the msys configuration fileModify/etc/profile (the Windows path is C:/msys/1.0/etc/profile)
executing the command-U when the execution parameter is included, the unset variable is used as the error handling (if the extension attempt appears in the unset variable, the shell displays the error message. if it is not interactive, exit with a non-ling value)-V: The shell input line is displayed when the input line is read.-X: after each simple command is extended, the PS4 extension value is displayed, followed by the command to be executed.-L sa
showcase u
Core lib smit. log unix
7. Long Commands
When you write a long command in the AIX shell, you can use "\" as the line break tag. In this case, shell uses a ">" as the prompt.
8. variables in the Shell Environment
Variables can be defined in the shell environment for systems, users, shell programs and various applications. Variables can be defined by the system or by the user. You can also modify or delete the variables that have been defined by the system.
Example: HOME -- user's ho
the hardware is too cheap.
There is also a variety of game hosts, such as PS2/PS2/gamecube/Wii, which are all variants of the standard ibm pc, designed for better computing and graphics capabilities. However, these buddies are not mixed up recently, because the iPhone has come out, and the computing and graphics capabilities of ordinary PCs are getting stronger and stronger. programmers who write games cannot use so many hardware resources at all, no more dedicated game host design is require
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