Linux

The method of performance tuning for Linux operating system 2013-03-18 15:35 Honestqiao Chinaunixfont Size:T | T Linux is a free-to-use and free-to-propagate Unix-like operating system, with different Linux distributions and different kernels

Thorough understanding of Linux system failures and resolution 2009-12-25 10:24 anonymous NET130font Size:T | T Often when the application of Windows operating system, we will be a lot of system failure, so many people began to apply the Linux

NeedsDetects whether the client program is forced to end without affecting server processing.StatusBoth the server side and the client socket set the KeepAlive property.Server-side set the number of probes and other parameters, the client, the

First let's look at the physical structure of the hard disk storage principle.　　Hard Drive Construction:　　1. head: Head, magnetic head on disk surface, there are several heads, there are several disk faces. Numbering starting from 0, Max 255,

Transferred from: http://blog.csdn.net/aklixiaoyao/article/details/7548860In various computer architectures, the storage mechanism of byte, word and so on is different, which leads to a very important problem in the field of communication, that is,

There was some useful tools in unix/linux to check out how the system was going on.Here are a short summery of them:This comes from a link below.=======8x-----------start-of-quotation------------x8=======Linux Performance Diagnostic

Reprinted from: http://linux.chinaunix.net/doc/2004-10-05/16.shtml#324lfindex0Directory : /proc---A virtual file system Loading the proc file system View/proc's Files Get useful system/kernel information Information about

With OpenSSH in the Linux login SSH server, each prompt to enter a password, and use Vim NETRW plugin to edit the remote file every time after the change to save the password, very troublesome. Looking at the help documentation for NETRW, I found a

1. Problem description First is NBU backup I2000 database, monitoring page to always fail, but in fact, the Rman backup operation has been completed, only the last $? When the exception is caused.Second, in a business upgrade, the Ideploy tool

1 Installing Wine2 install exe software: Download the application software. exe, then click on the right button to open with wine/or in the terminal wine application software. EXE can be installed.Uninstall EXE can right click Install software in

+++++++++++++++++++++++++ +++++ File System Management +++++++++++++++++++++++++++++++1. Partitioning and file system:Partition type:          The partition represents:　　　　          　　　　　　　　               File System:upgraded version of Ext2:ext

Fdsik can partition the disk into several zones, but also can specify partitions for each partition of the file system, such as Linux, FAT32, Linux, Linux swap, FAT16 and in fact, Unix-like operating system of the file system, etc., of course, when

1. Introduction to AwkAwk is a programming language that is used to process text and data under Linux/unix. Data can come from standard input, one or more files, or the output of other commands. It supports advanced functions such as user-defined

Recently looking at "Linux Kernel source code scenario analysis", author Queen Maud. At the beginning of the book, I introduced the assembler assembly with GCC and the linked list of Linux kernel data structures. Unfortunately, the book is not

Modify the Host IP address and host name in Linux.  **************************************** ******************************** ************** Original Works are from the blog of "Deep Blue blog". You are welcome to repost them. Please indicate the

Linux uses iostat to analyze IO performance and linuxiostatio Performance Original article: http://www.cnblogs.com/bangerlee/articles/2547161.html For I/O-bond processes, we often use iostat to view the number of IO requests issued by processes and

Create docker image and sshddocker With sshd service Reference: https://docs.docker.com/examples/running_ssh_service/ 1. Create an empty directory to store Dockerfile Mkdir-p/home/thm/docker/test/new_image Vim Dockerfile The content of Dockerfile

Hadoop Shell commands Use bin/hadoop FS to call the File System (fs) Shell Command. All FS shell commands use the URI path as the parameter. 1. cat Description: outputs the content of the specified file in the path to stdout. Usage: hadoop fs-cat

Name a network device in CentOS 7 In CentOS 5, we were used to the names of network devices such as eth0. In CentOS 6, we found that network devices were named like em1. At that time, we added biosdevname = 0 to the startup parameter during

Hadoop default counter based on computer resource analysis Preface The project requires statistics on the computer resources used by each business group, such as cpu, memory, io read/write, and network traffic. Read the source code to view the