shell rake

Rake Introduction Rake means Ruby make, a code-building tool developed with Ruby. But why does Ruby need rake? It's supposed to be that Ruby code doesn't need to be compiled, so it doesn't have to be rake. It turns out, rake has another magical effect, that is,

Rails does come handy, a rails generate scaffold command to generate all the files for view, controller, and model, and then execute rake db:migrate You can generate the corresponding database table structure. And this simple rake db:migrate has an unexpected problem: Let's start with the background: rails When you create a project, the SQLite database is used by default. In order to get started quickly, I

Problem description: rake aborted occurs when the rails project executes rake DB: migrate data migration, Solution: Check the prompt and run bunlde exec rake DB: migrate. The migration is successful! Knowledge added: difference in using bundle exec rake DB: migrate (derived from: http://www.iteye.com/problems/731

Rake is a program written in Ruby and we use rake to read the rakefile. And Rakefile contains defined tasks, each with a name, and some of the tasks it relies on, and a set of actions to perform. Now let's take a look at the rake in Rails. When you create a project using rails ' generate scripts, you automatically generate a Rakefile file in the root directory of

I do not know if you have to transfer data to the migration file experience, I believe that both the veteran and novice have done it. In fact, doing this is not going to work, but this practice will slowly introduce you to some unnecessary problems. It is generally thought that the contents of the Db/migrate folder are about the evolution of your database schema, and each new development or online environment will build the available databases through these migration. But if it's loaded here, r

Ruby You don't need to talk about this.Rvm It is used to help you install the ruby environment, help you manage multiple Ruby environments, and help you manage the ruby environment on which the ruby application you develop uses the machine. The ruby environment is not only Ruby itself, but also a third-party Ruby plug-in on which it depends. All are managed by rvm.Rails Needless to say, this is a well-known development framework. Look at http://zh.wikipedia.org/wiki/Ruby_on_Rails in detailRubyge

Ruby That's not much to say. RVM Used to help you install a ruby environment, help you manage multiple ruby environments, and help you manage which Ruby environment you use on your computer for each ruby application you develop. The ruby environment is not just Ruby itself, it also includes dependent Third-party Ruby Plug-ins. are managed by RVM. Rails This also needless to say, the famous development framework. See Http://zh.wikipedia.org/wiki/Ruby_on_Rails in detail RubyGems RubyGems is

its properties. And a lot of beginners are accustomed to using some framework to manipulate the data table, in fact, you can use the functions provided by rails itself can operate the data table. This function is the migrations function. Most rails developers use the basic functionality of migrations migration to create and manage databases. The Data Migration feature allows you to manage your database solution using Ruby language, and you can take advantage of some ruby-specific tools, such a

Transferred from: http://henter.me/post/ruby-rvm-gem-rake-bundle-rails.htmlRubyThat's not going to be a lot.RVMTo help you install the Ruby environment, help you manage multiple ruby environments, and help you manage which Ruby environment is used on the machine for each Ruby app you develop. The ruby environment is not just Ruby itself, but also a dependent third-party ruby plugin. are managed by RVM.RailsThis also needless to say, well-known develop

Ruby You don't need to talk about this. RVM It is used to help you install the Ruby environment, help you manage multiple Ruby environments, and help you manage the Ruby environment on which the Ruby application you develop uses the machine. The Ruby environment is not only Ruby itself, but also a third-party Ruby plug-in on which it depends. All are managed by RVM. Rails Needless to say, this is a well-known development framework. Look at http://zh.wikipedia.org/wiki/Ruby_on_Rails in detail Rub

Problems with installing plug-ins redmine_release_notes1, redmine_release_notes:https://github.com/hdgarrood/redmine_release_notes2. Installation Environment: Local redmine2.3.43. Problems occurred: Follow the installation steps on the installation: do the migrations. rake redmine:plugins:migrate Load the default formats (optional, recommended). If you've been using earlier versions, this would read your

ArticleDirectory 1. Create a model named blog During website development, databases often change, and repeated input of some test data is very troublesome. In this case, you can use rake DB: seed to initialize some data, which will call dB/seeds. RB file, instance description. 1. Create a model named blog Run rails G model Blog content: string created: datetime title: Text A new app/models/blog. RB will be created with the following

Using Rake in Rails to manage MySQL databases as an excellent programmer, in addition to writing a large number of programs, it is inevitable to create a large number of databases. In the past few years, I have created and managed a large number of MySQL databases. in this process, I have used various tools for management, so that the process is simpler, for example, the preferred graphical management tool PHPMyAdmin and command line-based MySQL clent

Today, I opened the RSS feed from delicious and saw many people collect the latest Fowler's recommendation for rake. ArticleAfter reading this article, I feel that it is really good and can replace ant. Ant's XML method has been unpleasant. XML is designed for machines. It has never been a chance to use ant in large quantities. The source code of rake is also good for learning Ruby. Its original protot

First, Shell basic applicationTarget:This case requires familiarity with the characteristics of the Linux shell environment, mainly practicing the following actions:1> switching the user's shell environment2> Practice Command History, command aliases3> REDIRECT standard input/output/error Output4> Pipeline Operation Practicesteps:Step one: Switch the user's

We all know that PHP executes system commands in the following ways: System () outputs and returns the last line of the shell results. EXEC () does not output results, returns the last line of the shell result, and all results can be saved to a returned array. PassThru () only invokes the command and outputs the result of the command directly to the standard output device. These methods will wait for the c

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[Shell programming] 1. Introduction to shell programming and introduction to shell programming Shell itself is a program written in C language. It serves as a bridge for users to use Unix/Linux, and most of their work is done through Shell.

My own preface explains:The original author is Dave Kerr, the original link to the. NET Shell Extensions-shell Context Menus, I was in order to complete the latest needs of the time when the query information found, because too long have not read foreign materials, So in order to exercise the translation, there is a sentence in the text could not be translated. Download Sharpshell source code-1.8 M

Shell Script Introduction Shell is a scripting language Aming_linux (public number) blog.lishiming.net (blog) You can use logical judgments, loops, and other syntax Functions can be custom-defined The shell is a collection of system commands Shell scripts can be automated operations, which can greatly incre