Unix Examples

After you have finished this chapter, you will be able to do the following: Explain the purpose of the device file explain the meaning of the main number and the number of the different character devices use Lsdev to list the main numbers of kernel drivers use LS to observe the primary and secondary numbers of a device file Use Ioscan to list device files associated with a specified device using ISSF to describe the characteristics of a device file. Assign a disk, tape, or CD device file name, determine the target number of the control card and the target address of the associated device assigned to a terminal or a Xiandai device file ...

At the same time, through the introduction of the following two examples, to consolidate the above problem analysis of the introduction: a multithreaded application of the performance problem analysis of a crash problem analysis of UNIX program http://www.aliyun.com/zixun/aggregation/17253. HTML > FAQ classification UNIX Run programs, often encounter the following types of problems: Crash memory leak handle leak process does not respond to the performance of the expected logic error UNI ...

By completing this chapter, you will be able to do the following: Configure the host name (hosthttp://www.aliyun.com/zixun/aggregation/11696.html ">name") to configure the IP address configuration default route with a LAN connection Configure the host to use Ping and nslookup for DNS clients to test network connectivity setting IP address and subnet mask IP address? LAN every machine, whether it is a laser hit ...

【51CTO finishing】 The following is the United States well-known technology site "Inforworld" has commented 10 most valuable open source software: 1. Linux kernel Linux is the most popular free operating system kernel. It is a Unix-like operating system written in C and conforming to the POSIX standard. Linux was first developed by Finnish hacker Linus Torvalds in an attempt to provide a free, free Unix-like operating system on the Intel x86 architecture. The plan starts at 19 ...

This paper introduces how to build a network database application method by MySQL of the golden combination of Web database, PHP is a server-side embedded hypertext Processing language similar to Microsoft ASP, it is a powerful tool to build dynamic website. While MySQL is a lightweight SQL database server that runs on a variety of platforms, including Windows NT and Linux, and has a GPL version, MySQL is considered the best product for building a database-driven dynamic Web site. PHP, MySQL, and Apache are Linux ...

Traditional client and server-side software technologies use a software solution called sockets to establish a connection. The use of sockets has not changed as the industry has grown from a static, fat client to a mobile thin client. But over the years, sockets have changed their shape and become more complex. As a result, this technology becomes difficult to understand, not to mention a comprehensive understanding of how sockets are used in the enterprise, or how they are used in conjunction with mobile and cloud technologies. This article will help you understand the concept of sockets, the type of sockets you can use for your applications, and use in mobile and cloud solutions ...

To complete this chapter, you can do the following: Describe why you want to differentiate between dynamic file system and static file system description/sbin,/usr,/stand,/etc,/dev,/var (operating system related directory) The main content description/opt,/etc/opt, and/var/ The main content of opt (application-related) uses find, and Whereis commands to locate files in the file system Introduction file system examples many system management tasks require http://www.aliyun.com/...

Sadie Online September 19, 2012, IBM in Beijing held the theme of "Big Data crisis big integration attack" IBM ELS large Data Strategy media conference, elaborated Els in the big Data era of the new strategy, designed to help enterprise users grasp the opportunity of large data, Address the pressures and challenges that large data poses to the infrastructure. IBM Systems and Technology Department of mainframe Products general Manager Schdone, IBM Systems and Technology Department of Greater China System Z Technology General Manager Wei Dong, IBM Systems and Technology Department of China Mainframe products emerging market General Manager Tando, IDC help ...

After completing this chapter, you will be able to do the following: List configuration files read during logon change default user path change default User terminal type change user prompt change user command line editor change user's default printer management Skel The default profile why do you want to customize the user account Set user terminal type custom user prompt set user default terminal, custom user path variable define a command-line editor if simply in passwd and/etc/group ...

MySQL provides standard SQL pattern matching and a format based on pattern matching of extended regular expressions like Unix utilities such as vi, grep and sed. Standard SQL Pattern Matching SQL pattern matching allows you to match any single character with "_" and "%" with any number of characters (including zero characters). In MySQL, the default SQL mode is case-insensitive. Here are some examples. Note that you can not use = or! = While you are using SQL mode, and use LIKE or NOT LIKE to compare operators ...