Linux

"linux& Audio" ALSA Audio Programming "essence" Preface: Here is a look at the meaning of each parameter and some basic concepts. Sample length: Sample is the most basic unit for recording audio data, with 8-bit and 16-bit common. Channel number

Recently learned some knowledge of VirtualBox, record, under VirtualBox How to implement folder sharing and bidirectional copy between host and virtual machine About bidirectional copies 1. Set the virtual machine to "two-way" shared paste Some

Long time do not write things, have been looking at some open source things, the following paste on Linux installation configuration postgres and use Dblink operation reference for readers and their future reference:1. Download Source: postgresql-9.3

Transferred from: http://blog.csdn.net/droidphone/article/details/8434768Multi-Touch (MT) Protocol-------------------------Copyright (C) 2009-2010 Henrik rydbergBrief introduction------------To make the most of the new multi-touch and multi-user

Character and string processing functions: Character and string processing functions are all character data, but their return value types are different.1. Take the SUBSTRING function:Format: substr (C,N1,N2)Function: Take the string C N1 character

Linux Find File Lookup command with grep file Content Lookup commandWhen using Linux, file lookups are often required. The commands you find are primarily find and grep. Two commands are of a district.　　The Difference : (1) The Find command is based

Linux View log file Contents command tail, Cat, TAC, head, EchoTail-f Test.logYou will see that the screen is constantly being printed out. This time interrupts the first process ctrl-c,---------------------------How Linux displays a few lines of a

Https://linux.cn/article-6103-1.htmlKali Linux is a well-known operating system for security testers and white hat. It comes with a lot of security-related programs, which makes it easy for penetration testing. Recently, Kali Linux 2.0 was released,

File Management CommandsLs-lThe first column is the file type-: Normal fileC: Character fileL: LinkP: Pipeline FileB: Block deviceLs-mComma separated[Email protected] ~]# ls-m/var/ADM, cache, crash, db, empty, games, Gopher, Kerberos, LIB, local,

Under various UNIX and Linux operating systems, each file (folder is also considered a file) is read, write, run set permissions.In Linux to modify the permissions of a folder or file we need to use the Linux chmod command to do, below I wrote a few

When we are finished, and the file system is formatted, the last mount Mount is mounted and the disk device is ready to use.One, what is Mount, uninstallAny block device cannot be accessed directly, and must be mounted on the directory to

turn from:Linux user space and kernel space (understanding high-end memory) Reference: 1. process kernel stack, user stack2. -linux kernel space 3.Linux Kernel Learning notes-5 memory managementLinux operating system and drivers run in kernel space,

Description in Unix, all processes except process 0 (that is, the pid=0 exchange process, swapper process) are created by other processes using the system call fork, where the process called fork creates a new process is the parent process, and the

This article is for example the following articles Deep understanding of the Linux boot processMBR (Master boot Record)The process that the computer executes before powering it on to the operating system main functionExplain the startup process

LINUX Study Notes account and group management, linux Study NotesLINUX Account and Group Management UID: UserID: Save the file:/etc/passwd GID: GroupID save file:/etc/group   /Etc/passwd file structure   A row represents an account, which contains a

Standard input/output (read & echo) of shell programming learning notes and shell learning notes   09:32:07  Input read: Purpose: Read a row from the standard input, or read a row from the file descriptor FD (file descriptor) and divide it into

Advanced Bash-scripting Guide (19th): maximum common divisor of two integers, bashscripting The example selected in this article is from the book "Advanced Bash-scripting Gudie", translated by Yang chunmin Huang Yi 1 #! /Bin/bash 2 # calculate the

Linux command rpm installation command, linux command rpm In Linux, almost all software is installed, uninstalled, and managed through RPM. RPM is called Redhat Package Manager. It is a software developed by Redhat to manage software packages in

The process started with execute shell in jenkins will be killed.In jenkins, the process started through execute shell will be killed. When you configure an automatic update deployment project in jenkins, if you use execute shell to start/Close

Svnserve Can't bind server socket Address already in use, svnservebind... Recently, I was busy building jenkins systems to integrate version control and git distributed version control, which involved some svn aspects. Because I also set up svn for