To implement read-write locks, you must first know the characteristics of the read-w

operating system To achieve multi-process, process scheduling is essential. How impo

 Do you know Linux? Are you a Linux system application? If you want to learn Linux, y

First, the actual demand server runs lighttpd, mainly to count the current number of

 Name : crontab Permissions : All users Usage : crontab [ -u user ] file crontab [ -u

. The Layer 2 switching technology is relatively mature. The Layer 2 switch is a data

 1. Specify the table filter as the packet filtering firewall default table, nat tabl

DB2 learning documentation (a) DB2 installation instructions: ===================== =

 <?php /** *PHPCircular Memory Queue Implementation with Shared Memory* Supports m

1. View Linux Kernel Version NumberCommand: uname -aDisplay: Linux localhost 2.6.32-4

 tcpdump -i eth0 -c 500 -w xxxeth0.cap-i eth1 only grabs data from eth1 port -c 500 r

CentOS: 1, first set about the systems time zone, use the following command #cp /

 First of all, from www.kernel.org wget under the kernel file (I downloaded it to the

execute ./check_cpu.sh error solutioncentos(redhat)yum install -y sysstatubuntu apt-g

 Network card traffic status CRITICAL 01-19-2015 10:16:30 1d 11h 26m 34s 4/4 CHECK_NR

Use ulimit -a to see what the current system limit is.[root@****]# ulimit -acore file

 1. vim deletes all contents of the fileggdGvim parameters:Method of moving the curso

1, download jdk1.7 or use wget command to download directly 2, extract jdktar-axvf jd

  First, boot from the general method of 1, boot from the boot in the /etc/rc.loca

 The disk sector defaults to 512 bytes. To verify, execute it from the command line:

tcpdump need to use root1. Listen to the 3306 port of this machine, you can get the d

 1. Perform performance test on redis of 1.56, request 1000 times, each request has 2

Use root user installation environment: (1)[code]yum install gcc gcc-c++[/code](2)APR

 Recently studying ContOS, yum is a command similar to apt-get under ubuntu. The foll

On the Linux platform, if you need to implement the task scheduling function, you can

 Execute every five minutes*/5 * * * *Execute every hour 0 * * * *Execute 0 0 every d

tcpdump command line mode, its command format is: tcpdump[-adeflnNOpqStvx] [-c quanti

 \\ can be \ is a newline \ is a carriage return The newline character in windows i

 Enter the vi command vi filename : Open or create a new file, and place the cursor o

gcc – o (2.1.out executable file can be arbitrary) 2.1.c Compile this program (

 Download AdobeReader download address; http://ardownload.adobe.com/pub/adobe/reader/

Found that snort can apply both fast and unsock modes. -A fast -A unsock However, som

 The first type is about type keywords, mainly including host, net, port, such as hos

ll display all file permissions in the current directory. . If preceded by ., this fi

 1. Double quotes and single quotes When entering string arguments in the g r e p com

on the command line is usually done in eclipse and ant. Today, you need to run a smal

 [ -a FILE ] True if FILE exists. [ -b FILE ] True if FILE exists and is a block spec

Sometimes when you execute some simple instructions, you dont want to input them seve

 The process is simply a process of executing a program, it is a dynamic concept. No

Every time a series of commands is annoying, record several commonly used instruction