Linux

Linux Installation oracle10g Configuration Dataguard Introduction and stepsDataguard is a high-availability database solution from Oracle, known as standby, before Oracle 8i. Officially renamed Data Guard starting with Oracle 9i. It is to ensure the

This section focuses on learning signals and signal-related processing functions, which are also updated later.http://blog.csdn.net/xiaoliangsky/article/details/40264151A signalThe signal is an event that occurs when UNIX and Linux systems respond

chmod----Changing the access mode of one or more files (mode) chmod [options] mode files  can only be used by a file owner or a privileged user to change the file access mode. Mode can be expressed in digital form or in the form of who opcode

Famous Pipes (FIFO) Named Pipes are also known as FIFO files and are a special kind of file. Because everything in Linux can be treated as a file, the use of named pipes has become very uniform with file operations. (1) Creating a named pipeYou can

Inter-process communication has the following purposes:1, data transmission, a process needs to send its data to another process, the amount of data sent between a byte to a few m;2, sharing data, multiple processes want to manipulate the sharing of

Operation and maintenance engineers usually install the service is very normal things, so the management of the package is particularly important.Content: Basic knowledge. The source code issued by the program is not operational,

I recently used QT to write a cross-platform software, because the settings are borderless, and I put a shadow on the program window myself, the shadow range is largerSo you have to add mouse penetration to the shadow area to have a better

Original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the following sources, otherwise, the legal responsibility to pursue copyright. Deep Blue blog:

1. Calculate the number of files and the number of directoriesThe following statement can help you calculate how many files and how many directories# ls-l * |grep "^-" |wc-l----to count files# ls-l * |grep "^d" |wc-l-----to Count dirYou can also

Before we begin our new content study, we will briefly review the above content: absolute path: "must be the root directory/write"; Relative path: "Not/write" special directory:.,..,-, ~, ~ Account needs to be noted;

IntroductionAwk is a powerful text analysis tool, with the search for grep and the editing of SED, which is especially powerful when it comes to analyzing data and generating reports. To put it simply, awk reads the file line-by-row, using spaces as

First, the Linux processLinux is a multi-user multitasking operating system.Multi-user means that multiple users can use the computer at the same time;multitasking means that Linux can perform several tasks at the same time.The process is simply a

In Linux under the thread of the programming of the students are expected to find a bug found crash, multi-threaded case of the bug tracking is not easy.Now let me introduce a handy way to Ulimit core.Let's start with a brief introduction to what

The SSH secure Shell client is the SSH command-line control terminal, and you should transfer the file using the SSH secure file Transfer client. Just talk about how he uses it, and you'll find other articles about SSH configuration. First, login

Best practices for Linux security reinforcementSecurity issues of enterprise IT system construction will not become an outdated topic at any time. Enterprises should build IT systems suitable for their own business needs at the beginning and

Send monitoring metrics to the internal mailbox in LinuxDatabase health monitoring is a very important task. An important indicator/KPI monitoring result has a dedicated collection, monitoring, and alarm system for relevant tasks.Some indicators

The origin of the nice program name in Linux The role of the nice program in Linux must be known as a-20 to 19 number to control how much time the CPU is allocated to this process. The smaller the number, the more time slices the CPU allocates,

Install GNOME 14.10 In Ubuntu 3.14 GNOME 3.14 desktop environment has been released, new features and software updates, especially the Wayland (not the default) Display Server can be used to attract everyone. Among them, GNOME 3.14 is equipped with

Redhat 5 Disable IPv6 IPv6 has not been fully popularized yet, but IPv6 is effective after the system is installed, which affects network performance to a certain extent. Therefore, we recommend that you disable IPv6. Now we will describe how to

Linux rm deletes a large number of files, linuxrm When you use rm to delete a large number of files, you may encounter an Argument list too long problem. As shown below [oracle@DB-Server bdump]$ rm -v epps_q001_* -bash: /bin/rm: Argument list too