Linux Bash Parameter handling method

0. IntroductionWhen writing a program, you often have to handle command-line arguments, and this article describes the command-line processing under bash.Options and Parameters:As the next command line:./test.sh-f Config.conf-v--prefix=/homeWe call

Build the JDK yourself under Linux

Because you decided to learn a Java virtual machine, you're going to start by compiling your own JDK. This article is the first article to learn about Java virtual machines, and there will be more related articles later.Get Source codeThe source

Vmware-workstation Install/uninstall (Linux version)

gtk

Vmware-workstation-full ==>linux Version Installation steps:1. First download the latest version on the official website, download to local grant executable permission (chmod +x)2. Perform the installation, although can eject the graphical

Y450 Linux Road "01"-Installation system, graphics card (first day of installation, continuous update)

First introduce hardware and other information:Notebook: Lenovo Y450,09 Purchase, 128G solid-state drive (after installing Linux did not feel fast, using win when it feels a lot faster), 5G memorySystem: CentOS 6.5 (Install CENTOS7, but feel I was

Installation of Arch Linux (refer to official documentation, desktop installation is not done well later)

Start the installation system first (I'm using a VMware virtual machine)1. Setting the keyboard layout#loadkeys "Us" #设置为美国的键盘布局, you can usually2. Create a partition of the hard diskI am using FDISK to partition the disk, the main partition only

Operation function of bidirectional linked list in Linux kernel

There are a number of linked lists used in the Linux kernel: doubly linked lists. The management of the processes used in the kernel is achieved through a doubly linked list. So the operation of the list is very common and very important, so the

Linux Network programming Function--address multiplexing setsockopt ()

1, setsockopt () Role and introductionThe socket is not withdrawn immediately after it is closed, but it is going through a time_wait phase. The port is now re-bound to an error. To bind the port immediately, you need to set the SO_REUSEADDR

Show all Running Processes in Linux

PS because of historical reasons, so very peculiar, some commands must add "-", such as:PS AThe above notation is wrong.Simple selection ********* ********* selection by list *********-a All processes-C by command name-N Negate Selection-G by Real

Error running STRLWR function under Linux: LD returned 1 exit status

Run the STRLWR function times wrong, the source program is as follows:#include #include void main () {char s[10]={"China"}; printf ("%s\n", STRLWR (s)); return 0 ;}The error content is as follows:eg6527a.c:in function ' main ':Eg6527a.c:8:2:warning:

Linux Error codes

You need to include the header file when you use it# include [Email protected]:~/projects/tfradius$ cat/usr/include/asm-generic/errno-Base. h #ifndef _asm_generic_errno_base_h#define_asm_generic_errno_base_h#defineEperm 1/* Operation not permitted */

Embedded Linux Driver Development Video tutorial

Embedded Linux Driver Development tutorial (kernel driver, watchdog technology, touch screen, video capture system)Suitable for people: advancedNumber of lessons: 109 hoursUsing the technology: embedded LinuxProjects involved: Driver development,

"Linux" Iptables open port 80

Friends who often use CentOS may encounter the same problems as me. The firewall is turned on and the 80 port is inaccessible, and the friend who just started learning CentOS can refer to it.Friends who often use CentOS may encounter the same

Linux reentrant, asynchronous signal security, and thread safety

A reentrant functionWhen a captured signal is processed by a process, the normal sequence of instructions executed by the process is temporarily interrupted by a signal processor. It first executes the instructions in the signal handler. If it is

Easy to implement the chat server program based on Linux or win run

For developers who do not understand network programming, Writing a good service-side communication program is a hassle. However, with the EC this free component you can easily build a network service program that runs on a Linux or win-only

Two ways to share files with Windows in Linux (virtual machines)

Windows with Sourceinsight and Linux collaboration coding habit with Sourceinsight read and write code, in Linux for a moment no similar tool, VI operation is not familiar, occasionally look or small change code also line, project a big feeling on

[Nginx] Simple Nginx virtual host configuration and nginx Virtual Host Configuration

[Nginx] Simple Nginx virtual host configuration and nginx Virtual Host Configuration Bytes ------------------------------------------------------------------------------------------------------- Configure the VM: 1. Bind a domain name Vim/etc/hosts #

Learn vi and vim editors (3): simple text editing (2)

Learn vi and vim editors (3): simple text editing (2) In the previous article, I will continue to explain some simple text editing commands in the vi editor. This article mainly involves commands such as text deletion, copying, and moving. Delete

Vsftpd configuration file details, vsftpd configuration file

Vsftpd configuration file details, vsftpd configuration fileVsftpdConfiguration file details1.Default Configuration:1> allow anonymous users and local users to log on. Anonymous_enable = YES local_enable = YES2> the logon name for anonymous users is

Install and configure django on Mac

Install and configure django on Mac 1. install the software package and create a project $ Sudo pip install django$ Sudo python-c "import django; print django. VERSION"(1, 7, 0, 'final', 0)$ Sudo django-admin startproject cmdb # create a project$

Three tools help Linux Desktop Scanning

Three tools help Linux Desktop Scanning Whether you are transforming to a paperless office lifestyle, you need to scan a document to back up or send it via email. To scan old photos, you need to convert any content from a physical version to an

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