Linux

Basic file management and XFS file system backup Recovery 1.1 Linux system directory structure, relative/absolute path. 1.2 Create/copy/delete files, RM-RF/accidents 1.3 View File Contents 1.4 XFS File system backup and

=================================================[Email protected] ~]# date-rFri, Nov 2014 08:35:37 +0800[Email protected] ~]# cat/etc/sysconfig/clock# The time zone of the system is defined by the contents of/etc/localtime.# This file was only for

First, check the installation path of the JDK:Whereis JavaWhich Java (Java execution path)Echo $JAVA _homeEcho $PATHNote: If you are in Windows, you can use:Set Java_home: View JDK Installation pathJava-version: View JDK versionSecond, uninstall the

Open the virtual machine file and click Next650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/84/6F/wKioL1eQjgmTcwnqAAdn_VipVm8455.png-wh_500x0-wm_3 -wmp_4-s_278297866.png "style=" Float:none; "title=" 1.png "alt="

1./proc DirectoryThe Linux kernel provides a mechanism for accessing kernel internal data structures and changing kernel settings at run time through the/proc file system. The proc file system is a pseudo-file system that only exists in memory and

1. Piping and redirection(i) to allow the second command to be executed only after the first command has been successfully completed, you can separate the two commands with a && symbol. For example:ls /usr/local/dir-name 2>/dev/null &&

Linux processes exist in a variety of states, such as the running state of the task_running, the stop state of the exit_dead, and the wait status of the task_interruptible receive signal, etc. (can be viewed in include/linux/sched.h). One of these

HP-UX:Pre-collection:1) BDF2) Strings/etc/lvmtab3) Lvdisplay [LV name]: lvdisplay/dev/vgs70/lv0144) Vgdisplay [VG]: VGDISPLAY/DEV/VGS70 PE size is the smallest allocation unit5) swlist-l product |grep-i ONLINEJFS: ONLINE-JFS is a tool that can be

I. Common process and background processBy default, the process is running in the foreground, so the shell is occupied and we cannot do anything else. For those processes that do not interact, many times, we want to start it in the background and

Introduction to FTPFTP is the abbreviation for file Transfer Protocol (document Transfer Protocol), and Chinese is called "Interfax protocol". Used for two-way transmission of control files on the Internet. At the same time, it is also an

Transferred from: http://blog.csdn.net/hdujinhuihui/article/details/8686817High-end memory is an important concept in Linux, a concept that was very confusing when it came to Linux. In fact, this concept is relatively simple, understanding the

embedded Linux system Programming (ii)--File Descriptor control function fcntl Because the fcntl function is too flexible and complex, the fcntl function is listed separately from the file IO , which is easy to read in detail. The function

One of the most basic tasks in Linux is to set file permissions. Understanding how they are implemented is your first step into the Linux world. As you expected, this basic operation is similar in UNIX-like operating systems. In fact, the permission

Source file Address: http://www.cnblogs.com/lclq/p/5619271.html1. Download install VMware, I installed VMware 12.VMware starting from 11 no longer support 32-bit system, 32-bit system please install 10.Introduction to the official features of VMware

Use the GCC compiler to generate dynamic and static link libraries. The gcc compiler Reprinted please mark: http://www.cnblogs.com/winifred-tang94/ 1. compilation process Gcc-fPIC-c xxx. c -FPIC indicates the target code that notifies the gcc

After the notebook with ubuntu14.04 and Windows 7 is started, the grub rescue> prompt appears, and the grubrescue of both systems appears. The solution is as follows: 1. enter ls at the grub rescue> prompt and you will see that this command lists

SSH password-free logon and SSH password-based LogonMachine A: 192.168.1.100 (production machine) machine B: 192.168.1.123 (Management machine) Requirement: log on to the production machine from the management machine without A password for

Install multi-version JDK on MAC and switch between them Environment: Mac air, OS X 10.10, 64-bit History: In the past, Java on Mac was provided by Apple and only supported to Java 6, and the OS X 10.7 does not come with it (but is optional) (the

Android Studio2.0 tutorials from entry to proficient in MACPreface In this tutorial, you will learn how to use Android Studio2.0 to develop Android applications. From installation to development of Hello World, you will be explained in illustrated

Deploy and build an https (SSL/TLS) Local test environment under IIS In Win10 System Sometimes we want to deploy some XX projects in the company as https sites to Encrypt transmission at the transmission layer to prevent others from sniffing