This paper is a learning note based on Linux version number of mini2440 development board linux-22.214.171.124
I. control Interface Description
Control interface mainly allows user space applications (alsa-lib) to access and control audio codec chip multiplexers, sliding controls and so on.
2. open of control interface
According t ...
Posted by phpCCore Brad on Wed, 08 May 2019 22:06:02 +0200
Salt introduces a powerful message queue as a communication transmission mechanism. Sometimes we need old tools to be more effective -- salt ssh.
Official documents https://docs.saltstack.com/en/latest/topics/ssh/index.html
salt is designed to connect a large number of remote hosts at one time, while SSH (security shell is short for Secure she ...
Posted by tomwerner on Wed, 08 May 2019 17:54:04 +0200
Three-step installation of kubernetes cluster
What is a batch task?
In deep learning, there are many tasks of multi-machine and multi-card, that is to say, colleagues will have multiple pods, but these pods belong to the same task.
So there's a problem.
A task starts with 100 pods, each pod needs a card, a total of 100 GPU cards, while there ar ...
Posted by jrobles on Wed, 08 May 2019 14:45:03 +0200
Commonly used disk partitioning tools, limited by the mbr partition table, can only partition disks smaller than 2TB. If you use fdisk to partition disks larger than 2TB, although partitioning is possible, it can only recognize 2T of space. Generally, the parted partitioning tool is used
- l # Display all disk partition information
Posted by deejay on Wed, 08 May 2019 14:39:03 +0200
File and Content Processing - wc, tr
1. wc: Count lines, words, or bytes of a file
Functional description of wc command
The wc command calculates the number of words.With the wc command, we can calculate the number of bytes, words, or columns of a file. If you do not specify a file name or give it a file name of'-', the wc command reads data ...
Posted by xydon1 on Tue, 07 May 2019 22:40:02 +0200
Program: Executable file stored in disk file
Processes: Instances of program execution
Cmd: ps ，top
Process ID: Each process has a unique process ID identified by a non-negative integer
0 is the dispatch process, 1 is the init process, (most UNIX systems) 2 is the page daemon
/*In addition to the process ...
LVM Details - Junma Jinlong - Blog Garden
How to reduce the size of an LVM partition formatted with xfs filesystem on CentOS7?
Brother Junma's blog will go a little deeper, and he is based on ext filesystem to demonstrate expansion and scaling, while I use xfs filesystem.
Traditional disk partitioning ...
Posted by rakhi on Tue, 07 May 2019 20:15:04 +0200
Infinite polar classification simply means that a class can be divided into several subclasses, and then one subclass can be divided into other subclasses indefinitely, as if windows could create a new folder, then create some folders in this folder, and some folders under the folder.
So how does PHP achieve its infinite classif ...
Posted by igul222 on Tue, 07 May 2019 03:05:03 +0200