发布于 2017-07-07 18:43:32 | 53 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的Ruby教程,程序狗速度看过来!

Ruby编程语言

Ruby,一种为简单快捷的面向对象编程(面向对象程序设计)而创的脚本语言,在20世纪90年代由日本人松本行弘开发,遵守GPL协议和Ruby License。它的灵感与特性来自于 Perl、Smalltalk、Eiffel、Ada以及 Lisp 语言。


对于新入门的开发者,如何安装 Ruby, Ruby Gems 和 Rails 的运行环境可能会是个问题,下面这篇文章主要给大家分享了在CentOS 7下配置Ruby语言开发环境的方法教程,文中介绍的非常详细,需要的朋友们下面来一起看看吧。

本文跟大家分享的是在CentOS 7下配置Ruby语言开发环境的方法教程,分享出来供大家参考学习,下面来看看详细的介绍:

安装Ruby 2.2

CentOS7存储库中的Ruby版本为2.0,但如果需要,可以使用RPM软件包安装2.2

1、添加CentOS SCLo软件集合存储库


[[email protected] ~]# yum -y install centos-release-scl-rh centos-release-scl
# set [priority=10]
[[email protected] ~]# sed -i -e "s/\]$/\]\npriority=10/g" /etc/yum.repos.d/CentOS-SCLo-scl.repo
[[email protected] ~]# sed -i -e "s/\]$/\]\npriority=10/g" /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo
# for another way, change to [enabled=0] and use it only when needed
[[email protected] ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/CentOS-SCLo-scl.repo
[[email protected] ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo
# if [enabled=0], input a command to use the repository
[[email protected] ~]# yum --enablerepo=centos-sclo-rh install [Package]
[[email protected] ~]# yum --enablerepo=centos-sclo-sclo install [Package]
# 安装ruby
yum --enablerepo=centos-sclo-rh -y install rh-ruby22

2、软件集合的软件包安装在/opt目录下, 要使用它,需要加载环境变量,如下所示:


# 加载环境变量
[[email protected] ~]# scl enable rh-ruby22 bash
[[email protected] ~]# ruby -v
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]
[[email protected]obe ~]# which ruby
/opt/rh/rh-ruby22/root/usr/bin/ruby

3、设置登录时自动启用Ruby 2.2,按如下所示进行配置:


[[email protected] ~]# vim /etc/profile.d/rh-ruby22.sh
#!/bin/bash
source /opt/rh/rh-ruby22/enable
export X_SCLS="`scl enable rh-ruby22 'echo $X_SCLS'`"
export PATH=$PATH:/opt/rh/rh-ruby22/root/usr/local/bin

安装Ruby 2.3


# 安装ruby
yum --enablerepo=centos-sclo-rh -y install rh-ruby23

1、软件集合的软件包安装在/opt目录下, 要使用它,需要加载环境变量,如下所示:


# 加载环境变量
[[email protected] ~]# scl enable rh-ruby23 bash
[[email protected] ~]# ruby -v
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]
[[email protected] ~]# which ruby
/opt/rh/rh-ruby22/root/usr/bin/ruby

2、设置登录时自动启用Ruby 2.3,按如下所示进行配置:


[[email protected] ~]# vim /etc/profile.d/rh-ruby23.sh
#!/bin/bash
source /opt/rh/rh-ruby23/enable
export X_SCLS="`scl enable rh-ruby23 'echo $X_SCLS'`"
export PATH=$PATH:/opt/rh/rh-ruby23/root/usr/local/bin

安装Ruby on Rails 4来构建Ruby Framework环境

1、添加EPEL软件存储库


[[email protected] ~]# yum -y install epel-release
# set [priority=5]
[[email protected] ~]# sed -i -e "s/\]$/\]\npriority=5/g" /etc/yum.repos.d/epel.repo
# for another way, change to [enabled=0] and use it only when needed
[[email protected] ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/epel.repo
# if [enabled=0], input a command to use the repository
[[email protected] ~]# yum --enablerepo=epel install [Package]

Ruby on Rails 4

1、安装Ruby 2.2,参考上面

2、安装依赖包(epel+SCLo)


[[email protected] ~]# yum --enablerepo=epel,centos-sclo-rh -y install rh-ruby22-ruby-devel nodejs libuv gcc make libxml2 libxml2-devel mariadb-devel zlib-devel libxslt-devel

安装Rails 4


[[email protected] ~]# gem install bundler
[[email protected] ~]# gem install nokogiri -- --use-system-libraries
[[email protected] ~]# gem install rails --version="~>4.0" --no-ri --no-rdoc
[[email protected] ~]# /opt/rh/rh-ruby22/root/usr/local/bin/rails -v
Rails 4.2.8

Ruby on Rails 5

1、安装Ruby 2.3,参考上面

2、安装依赖包(epel+SCLo)


[[email protected] ~]# yum --enablerepo=epel,centos-sclo-rh -y install rh-ruby23-ruby-devel nodejs libuv gcc make libxml2 libxml2-devel mariadb-devel zlib-devel libxslt-devel

安装Rails 5


[[email protected] ~]# gem install bundler
[[email protected] ~]# gem install nokogiri -- --use-system-libraries
[[email protected] ~]# gem install rails --no-ri --no-rdoc
[[email protected] ~]# rails -v
Rails 5.0.2

创建一个示例应用程序,并确保其正常工作

1、需要安装MariaDB服务


[[email protected] ~]# yum -y install mariadb-server
[[email protected] ~]# vi /etc/my.cnf
# add follows within [mysqld] section
[mysqld]
character-set-server=utf8
[[email protected] ~]# systemctl start mariadb
[[email protected] ~]# systemctl enable mariadb
ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service'

2、初始化MariaDB


[[email protected] ~]# mysql_secure_installation
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
  SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
In order to log into MariaDB to secure it, we'll need the current
password for the root user. If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
Enter current password for root (enter for none):
OK, successfully used password, moving on...
Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.
# set root password
Set root password? [Y/n] y
New password:
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
 ... Success!
By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them. This is intended only for testing, and to make the installation
go a bit smoother. You should remove them before moving into a
production environment.
# remove anonymous users
Remove anonymous users? [Y/n] y
 ... Success!
Normally, root should only be allowed to connect from 'localhost'. This
ensures that someone cannot guess at the root password from the network.
# disallow root login remotely
Disallow root login remotely? [Y/n] y
 ... Success!
By default, MariaDB comes with a database named 'test' that anyone can
access. This is also intended only for testing, and should be removed
before moving into a production environment.
# remove test database
Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
# reload privilege tables
Reload privilege tables now? [Y/n] y
 ... Success!
Cleaning up...
All done! If you've completed all of the above steps, your MariaDB
installation should now be secure.
Thanks for using MariaDB!
# connect to MariaDB with root
[[email protected] ~]# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 11
Server version: 5.5.52-MariaDB MariaDB Server
Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
# show user list
MariaDB [(none)]> select user,host,password from mysql.user;
+------+-----------+-------------------------------------------+
| user | host  | password         |
+------+-----------+-------------------------------------------+
| root | localhost | *E2ACEC2F2DA384EE6753673365DFEF35F0C272C9 |
| root | 127.0.0.1 | *E2ACEC2F2DA384EE6753673365DFEF35F0C272C9 |
| root | ::1  | *E2ACEC2F2DA384EE6753673365DFEF35F0C272C9 |
+------+-----------+-------------------------------------------+
3 rows in set (0.00 sec)
# show database list
MariaDB [(none)]> show databases;
+--------------------+
| Database   |
+--------------------+
| information_schema |
| mysql    |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)
MariaDB [(none)]> exit
Bye

3、创建测试应用程序


[[email protected] ~]# gem install mysql2 --no-ri --no-rdoc -- --with-mysql-config=/usr/bin/mysql_config
[[email protected] ~]# rails new SampleApp -d mysql
[[email protected] ~]# cd SampleApp
[[email protected] SampleApp]# vi config/database.yml
default: &default
 adapter: mysql2
 encoding: utf8
 pool: 5
 username: root
 password: password # MariaDB password
 socket: /var/lib/mysql/mysql.sock
# create test application
[[email protected] SampleApp]# rails db:create
Created database 'SampleApp_development'
Created database 'SampleApp_test'
[[email protected] SampleApp]# rails generate scaffold testapp name:string title:string body:text
[[email protected] SampleApp]# rails db:migrate
[[email protected] SampleApp]# rails server --binding=0.0.0.0
=> Booting Puma
=> Rails 5.0.2 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
Puma starting in single mode...
* Version 3.8.2 (ruby 2.3.1-p112), codename: Sassy Salamander
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop 

4、客户端访问http://10.1.1.53:3000/

总结

以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作能带来一定的帮助,如果有疑问大家可以留言交流,谢谢大家对PHPERZ的支持。



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