Linux

Pipe Introduction Pipelines are a way of interprocess communication in Linux, which connects the output of a program directly to the input of another program (in fact, I prefer to liken the pipe to the pipe of a rural land). The main pipeline of

The driver writes the basic process: 1. First of all, some version information, no use, but not less #define __NO_VERSION__ #include #include Char kernel_version[] = uts_release; 2. In order to correlate system calls with drivers, a very

A. POSIX shared memory implementation Shared memory is a piece of memory shared between processes. Is the fastest kind of IPC communication organization. The POSIX shared memory mechanism is mainly implemented through the memory Mapping (MMAP)

Symptom: Output generated from configuration Assistant "Oracle Net Configuration Assistant": Command =/home/oracle/p roduct/10.2.0/db_1/jdk/jre//bin/java-duser.dir=/home/oracle/product/10.2.0/db_1/network/jlib-classpath/home/

tcpdump Introduction In traditional network analysis and testing techniques, sniffer (sniffer) is one of the most common and important techniques. The sniffer tool is designed primarily for network analysis by network administrators and network

One: Overview The purpose of this article is to describe how to use open source software procmail and Qpopper to configure a POP3 server that can be used by a large number of users, with a focus on maintaining optimal server performance. Two:

Debugging Environment: redhat9.0apache1.3.29mysql3.23.58php4.3.4 Linux system installation I do not say, this is the basic skills, in fact, this article in similar redhat other Linux should also be universal, everyone as long as you master the

4.9 Here is a small Perl script that removes most of the comments from the generated configuration file and forms a simplified file. 4.10 Giving ownership of the Htdocs directory tree to the owner of the web directory tree root# Chown-r

There are two mail servers 192.168.1.1 (under Windows host name b.test.cn) and 192.168.1.3 (Linux under host name is a.test.com). Configure the DNS server under Linux, and here are some of the files that were set during the configuration

Simply speaking, do not do technical analysis (mainly is no technology), for everyone's reference, entertainment. As we all know, both systems are derived from an ancestor, Unix. Of course Unix is very very stable, I think the main reason is that

(3) Installing a DHCP server 1, the source program download address is: ftp://ftp.isc.org/isc/dhcp/dhcp-3.0.tar.gz, our version is: dhcpd-3.0 2, copy to:/USR/LOCAL/SCR after decompression: Tar zxvf dhcp-3.0.tar.gz 3,

One, what is data flow redirection Before you say data flow redirection, let's say the concept of data flow. The data flow is divided into three types: standard input (stdin), standard output (stdout), and standard error output (stderr). In simple

This article System Centos6.0 Server: (Centos) 192.168.182.130 Client: (LV2) 192.168.182.129 Rsync is a data mirroring Backup tool under Unix-like systems, and--remote sync can be seen from the name of the software. Its characteristics are as

New network, Enterprise mail server, stored in the 146gx6 RAID5, there are millions of enterprise users of the mail, data area, only one district, file system for ReiserFS, normal work, RAID suddenly offline, the administrator to the computer room

Simply record the first of the virtual machine. 1. viclient Login to Vcenter or ESXi, add a disk to the virtual machine Add disks to the virtual machine online. 2. Log into the virtual machine Linux system execute the following command to

The current hard disk is mainly divided into the following: Ide,scsi,sata,sas. where SAS (serial Attached SCSI) is a serial attached SCSI, a new generation of SCSI technology. The following are the names of the Linux common devices: The naming

These days to see the group has been in the study Gentoo this Linux operating system, the overall installation seems to be pure hand-compiled, just sneak into the taste of this system, the online collation of most of the data, spent half a day to

We know that before the client establishes a session with the server, the client sends the request first, then tpc/ip the three handshake, and then the client establishes an SSL session with the server side. Session Process: A--> Server Side B-->

UDP programming based on non-connectionSimilarly, when developing UDP-based applications, the main process is as follows: For non-connected UDP applications in the development process, the service side and the client's operating process is basically

Compile and install GCC in CentOS We know that for GCC to install the default version through yum in CentOS, CentOS 5 is 4.1.2, CentOS 6 is 4.4.7, and CentOS 7 is 4.8.3.Most of the time, compiling and installing software requires a later version of