Linux Bash If

Bash (GNU bourne-again shell) is the default shell of many Linux platforms, in fact, there are many traditional Unix shell, like tcsh, CSH, Ash, BSH, Ksh, and so on, SHell script is roughly similar, When you learn a shell, the rest of the shell will soon start, and most of the time, a shell script can often be used on many kinds of shells. By learning how to use bash scripting ...

One of the features of cloud computing is the ability to move applications from one processor environment to another. This feature requires a target operating system to receive it before moving the application. Wouldn't it be nice if you could automate the installation of a new operating system? A well-known feature of the intel™ architecture system is the ability to install Linux automatically. However, installing Linux automatically is a tricky issue for System P or IBM power BAE using the hardware management console. This article discusses the solution of ...

You can use the flexibility inherent in the command shell of Linux to create scripting languages that help you simulate DOS commands in a Linux environment. 　　 　　The specific approach is as follows. If you are an IT support expert, you like the command of Windows very much, when you first use the Linux command line, you may soon find yourself confused. The DOS commands you've been familiar with for a long time don't exist in Linux. So you will find yourself facing a terrible task: to learn and be familiar with the whole ...

How to install a custom Linux kernel Linux kernel is the heart of the http://www.aliyun.com/zixun/aggregation/13835.html ">ubuntu operating system." Ubuntu's own kernel usually contains all the drivers you need, but sometimes you want to tweak your kernel or if you need to recompile for specific reasons, this manual will help you. Like this less detailed document can actually be found in the kernel compilation Guide. Want to ...

This method is urgently needed to record what time to try ^^ In Linux, you can use the crontab + php method: 1, the use of crontab-e edit the contents of regular tasks: xx: xx: xx Execute a test.php File 2, php file must be in the first line of the file, with the interpreter path (as perl do) #! / Usr / local / bin / php PHP implementation requires Apache support, she ...

Now let's do something interesting! We will create an SE Linux user and assign him a role and then set the default security context for the user. In the old SE Linux environment, the encapsulation program was set up with VIPW (SVIPW), for example, Useradd (Suseradd), passwd (SPASSWD), CHFN (SCHFN), and so on, in the new SE linux environment, These programs have other names. 5.1 Establish a new ...

Familiarity with the command line interface is significant to the use and management of Linux operating systems. This chapter describes the knowledge of shell operations in the Red Flag Linux http://www.aliyun.com/zixun/aggregation/16493.html >desktop 6.0 system, including file and directory operations, Document and System Management and maintenance, process control, equipment management and other basic content. 8.1.1 Shell profile ...

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Number 23rd received a customer call, the Linux server can not log on, because the server is placed in China Unicom's hosting room, so can not be processed on-site. After the network detection, the server could not ping, the server network segment gateway can ping. Started thinking that the server managed room network problem, causing the server can not access, ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest Cloud host Technology Hall article before the beginning, ask the webmaster a question: What is very important to stationmaster? In fact, for the webmaster, a lot of things are very important. 　　But we now exclude external factors, the scope of the site to reduce the system itself, which is very important? The website data is one of them. Website ...

This article describes how to back up and restore mysql database under linux. Database backup is very important. If you do a regular backup, so that you can recover the data in the event of a system crash to the last normal state, the loss is reduced to a minimum. First, use the command to achieve backup MySQLl provides a mysqldump command, we can use it for data backup. Follow the prompts to enter the password, which put all the tm database table structure and # mysqldump-u root-p tm> tm_05051 ...