Linux

Linux processes can send signals to each other to send some notifications, the signal can carry data (4 bytes), specifically see the Sigqueue function. If you want to use a custom signal to send data, the normal signal only reserved two signals USER1

Jostree Reprint Please specify the source http://www.cnblogs.com/jostree/p/4129616.html1#include string>2#include 3#include 4#include 5#include 6#include 7#include 8#include string.h>9 using namespacestd;Ten voidList (Const Char*path,intLevel,

Last night let Ops help me update the online a shell script, and add to the scheduled task to prepare for 12:06 A.M. execution, when I woke up 5 o ' clock in the morning, I always feel wrong to check the mail to see if the scheduled task is executed,

Reprint please indicate the source: The Curtain Roll westerly column (Http://blog.csdn.net/ljxfblog)All along, in the process of processing a Linux server, often encountered a problem, sometimes after the kill process, the port is occupied, the new

Tag:linux    kernel     memory management     /* * the Up_wp_page () function is used to remove the shared state of the physical page while providing a page of a new physical page to the process where the copy occurs, and the new physical page is

Write a script that, after execution, prints a line that says "Please input a number:", asks the user to enter a value, prints out the value, and then asks the user to enter the value again. Until the user enters "end" to stopDescription: 1.unset

Du can see the size of files and folders, DF mainly look at the size of the database, see the partition of disk usage, LS can add-h parameter, so we see the file sizeDF can view the first-level folder size, usage scale, file system and its hang-in

#!/bin/shExport back_date= ' DATE +%y%m%d 'Export Backup_path=/home/oracle/dbbakecho ' Mkdir-p ${backup_path}/archivelog/${back_date} 'Rman msglog= $BACKUP _path/archivelog/${back_date}/arch_0_$back_date.log Connect target/;Delete Expired Archivelog

Knock it out manually, as a memory enhancement/: File System entry, also highest level directory/bin: The most basic and anxious users and ordinary users can use the command placed in this directory, such as: LS, CP, etc./ boot: The files required

Recently began to learn Python knowledge, because the Linux system comes with the latest version of Python 2.6.6, but we learn the version is generally Python 2.7.6, the following from the Linux system to install python start!1. Download Python 2.7.6

CentOS "screen selection" function (display) A CentOS6.5 is installed in the notebook, and the notebook usually has an external display. After the system is installed, the "screen selection" function (display) will never be found when the mouse is

General Production Environment LINUX Server Configuration 1. Selection of the LINUX server system version in the production environment Select the 64-bit LINUX operating system of CentOS6.5 CentOS (Community Enterprise Operating System) is one of

(Zz) linux awk, zzlinuxawkBlog reposted from http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2858470.html Thank you, original author. The organization is clear and easy to understand. The command line is correct. Introduction Awk is a powerful

Added the topic for system startup and Shutdown (LinuxMint) /*************************************** ******************************* Author: samson * Date: 11/21/2014 * Test platform: * 3.20.- 24-generic * GNU bash, 4.3.11 (1) -release ***********

Linux script exercises Example 1: write a script and use the loop and continue keywords to calculate the sum of the three divisible numbers within 100 Running result: Example 2: write a script and use the loop and continue keywords to

Analysis on the creation of Linux threads This article first uses the interface pthread_create to create a thread, and uses the strace command to track the steps for the interface pthread_create to create a thread and the system calls involved, and

Use jfreechart in linux Use jfreechart to generate images. in windows, there is no problem. In linux, cocould not initialize class org. jfree. chart. JFreeChart JFreeChart cannot be initialized by default in linux. The Headless mode is a system

Diagram of deploying and installing ownCloud 5.0 in CentOSEnvironment: System: CentOS 6.4 software: ownCloud 5.0 (Demo address) ownCloud is a free software developed by the KDE community for private Web storage. Main functions include file

Keepalived for high-availability cluster software in Linux Keepalived cluster software is a LVS (layer-4 protocol) service high availability solution based on VRRP protocol, which can be used to avoid Single Node faults. the LVS service requires two

Four features of the distributed service framework In the mobile and cloud era, although most of the scalability problems can be solved through the cloud platform, the scalability challenge of the service itself still exists. For example, a new