I'm Just A Programmer

My Mac environment

2019-09-25T23:09:00.001+08:00

I know that every software engineer has a development environment that he is favorited. This article records all my Mac environment in order to set up faster when I change the computer in the future. Basic on the Mac Home-brew Every Mac lover may know this package management tool. This is my first installation when I begin to use a new Mac. $ /usr/bin/ruby -e "$(curl -fsSL https://

Install NFS server on CentOS

2017-07-18T15:33:00.000+08:00

Network FileSystem (NFS) is created by Sun company. It provide you a service to share files between different machine via network. It is similar with Samba which I mentioned before. But the transport speed is faster than Samba. Because it does not need user to type account and password. The server has white list to allow legal IP to login to access files directly. Install server is very easy. We

The concept of directory structure on macOS

2017-06-29T14:20:00.000+08:00

This article is aimed to introduce directories hierarchy for macOS. macOS is also followed by Filesystem Hierarchy Standard (FHS). But it has a little difference, that this article collects for you. The content of directories in macOS is divided to two part, standard directories and hidden directories. Standard Directories /Applications : Application’s contents This directory is where you

Importing Swift file to Objective-C project

2017-06-28T15:06:00.001+08:00

I think it is very complex when I read Apple's reference. Hence, I decided to write a simple article which illustrates you how to import Swift file into Objective-C project step by step. First, you should create an Objective-C project. After project be created. We have some parameters should be set in Build Settings. Find “Defines Module”, and set to “YES”. This setting let Xcode use same

How to install Samba on CentOS ?

2016-06-01T21:03:00.001+08:00

Is this article teach you do basic samba? Oh~ no. This article introduces the server of samba. This server can help you to share files between Linux and Windows. The difference with FTP server is you can revise file directly on your PC. So let me show you how to install Samba server on Cent OS. Install samba [nick1811@centos-6 ~]$ sudo yum install -y samba To allow folder access [nick1811@

Change the login message

2016-05-17T21:39:00.000+08:00

To know which server is own login, we should show welcome message before login. This article illustrates how to set display messages before/after login on the banner. Before Login To show welcome message before login, you should edit ssh configure file, /etc/ssh/sshd_cofig. Add banner message which is follows. We add a banner text file to /etc/profile.d, and specify this file path in the ssh

Searching log for shutdown/reboot on Linux

2016-05-16T21:28:00.000+08:00

To address problem, sometimes, we need to find log to know machine's shutdown/reboot time. However, how to do it? last command We use command, man last, to view the illustration(link). It lists login account, but reboot the machines use a pseudo account. Hence, we use the command, last reboot , to show the reboot time. For an instance, it shows last reboot time at 5/12 13:04. [root@centos-6 ~]

How to make a schedule to clean logs on Linux ?

2016-05-09T12:28:00.000+08:00

In the software developing, we may make a lot of logs and stored on our developed systems. However, logs will increase by the time. To address increasable logs, we should make a schedule to clean it. In Linux system, we have a simple way to do it. This article will introduce two commands which are installed on Linux. First is crontab, that is a command which service for you to make a

The concept of directory structure on Linux

2016-05-01T23:06:00.001+08:00

This article is aimed to provide directory structure information on Linux Operation System. All of the directories are following the Filesystems Hierarchy Standard (FHS). Directories are specified purpose to store files. /bin : Essential user command binaries (for use all users) All the executable binary programs that can be executed by all users . E.g. cat, chmod, chown, date,

Most Used Commands on Git

2016-03-30T12:46:00.000+08:00

Initial git repository on current directory $ git init Download a project from GitHub/GitLab $ git clone [url] Configure your personal information $ git config --global user.name "Nick Yang" $ git config --global user.email "your_email@example.com" Add .gitignore file (generate .gitignore) $ git config --global core.excludesfile ~/your_file Add file to area $ git add [file] Remove file

App Transport Security

2016-03-28T12:21:00.000+08:00

Platforms: iOS 9.0 and later, OS X v10.11 and later Summary: l Secure connections between App and back end l Https exclusively l default strong Internet security in iOS and OS X apps and in app extensions Protocol: TLS 1.2 and