Linux

GREP is the abbreviation for a generic regular expression parser (general Regular Expression Parser). the function of the grep command is to analyze a line of information, and if it has the information we need, take it out. It should be noted that

We often need to look up a file in the system, so how can we accurately and efficiently determine the exact location of a file in the Linux system? I've summed up a few commands for finding files in a Linux system. 1. Find command Find is the most

Java EE Development of various types of resources download list, the history of the most complete IT resources, personal collection summary. This is a good habit to follow in the 10 Linux system command line operation mode, they can not only make

This article explains the mechanism of Ioband The Ioband principle is simple: the Ioband device sets many group, each group has its own weights and thresholds, and Ioband drives QoS control for these group IO requests. Ioband devices are controlled

Java EE Development of various types of resources download list, the history of the most complete IT resources, personal collection summary. Linux shows that all directories are under a single directory tree, regardless of which drive or hardware

/proc/net subdirectories The files in this directory describe or modify the behavior of the networking code. You can set or query many of the files in these special files by using the Arp,netstat,route and IPFWADM commands.

If you want to use a TORTOISECVS client like Windows on Linux, it seems like only a Subversion tool (Rabbitvcs) and no CVS tool. In fact, we can achieve a similar (simpler) effect by adding scripts to the Linux nautilus. Enter the Nautilus script

Reprint: http://blog.csdn.net/a_ran/article/details/43759729 　　 Context switching between thread schedules What is context switching. If the main thread is the only one, then he is basically not scheduled to go out. On the other hand, if the number

Reprint: http://blog.csdn.net/sszgg2006/article/details/8447176 file path forward slash and back slash Forward Slash, also known as the left slash, the symbol is "/", the backslash is also called the right slash, the symbol is "\". The

Andrew: As we all know, Linux can be a flexible multi-level drive architecture to unify and abstract the interface, the lowest level of drive is always directly oriented to the hardware, and the highest levels of drive in Linux is divided into

Date Kernel version Architecture author GitHub CSDN 2016-08-31 Linux-4.7 X86 & Arm Gatieme Linuxdevicedrivers Linux Memory Management 1 Memory Description CSDN

One of the most compelling questions for anyone writing kernel code is how to finish debugging. Because the kernel is a feature set that is not associated with a process, its code cannot be easily executed in the debugger and cannot be traced. This

At the end of last week, I began to read the book Unix/linux System Programming Manual, the weekend time to see the fourth chapter, that this book than directly to see the Linux kernel is better to accept more, because from the code to start, you

Qt Creator supports Chinese, starts faster than Eclipse, NetBeans, and has a better interface, and works well with input method FCITX (cursor following). You can use the QT creator Contemporary Code Editor as a vim helper, the advantage of which is

Linux kernel has a script lindent, nothing can be installed, sudo apt-get install indent can help you format your code with a good code style.such as:/usr/src/linux-headers-2.6.22-14/scripts/lindent Common

System log Management 1. System log系统日志是记录系统中硬件、软件和系统问题的信息，同时还可以监视系统中发生的事件。用户可以通过它来检查错误发生的原因，或者寻找受到×××时×××者留下的痕迹。系统日志包括系统日志、应用程序日志和安全日志。2. System Log Default classification/var/log/messages 系统服务的日志，包括服务的信息，报错等等/var/log/secure

File attributes (Ls-lhi see the information)1.1 First column: Inode number 1.1.1 What is inodeThe file is stored on the hard disk, and the minimum storage unit for the hard disk is called "Sector" (sector). The size of each "sector" is 512 bytes

The concept of a static library:We know that program compilation requires preprocessing, compiling, assembling, and linking several steps. In our application, there are some common code that needs to be reused, compile the code into a "library" file,

Linux/gnu There is a widespread word is "All Linux is a file", the system is the kernel to create a series of processes to invoke the file to complete the tasks assigned by the user. And the LINUX/GNU system as a multi-user multitasking operating

How DNS is queried1. RecursionRecursion means that the client only needs to ask once, if the superior DNS server does not know, then the superior DNS server to find their own DNS server.2. IterationThe iteration means that the client needs a DNS