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为什么要安装Erlang
有一些应用程序和系统,其中Erlang具有重要作用:RabbitMQ,面向消息的中间件是用Erlang编程语言编写的。WhatsApp使用Erlang来运行消息服务器。亚马逊,雅虎,Facebook,摩托罗拉和Github等许多大公司正在使用Erlang。
一、关于Erlang的简单介绍
我来验证下。唉,现在的博客都太不靠谱了,都没有验证测试,就写出来。误导大家,浪费大家的时间和精力。
二、下载包
首先要去Erlang官网下载一个最新的安装包。
不推荐通过apt-get
会发现找不到源,或者很久没有更新,安装的都是老旧的。
官方包下载地址
三、把包传到机器上去
四、执行安装操作
1、执行安装操作
dpkg -i esl-erlang_21.0-1_ubuntu_artful_amd64.deb
它会说,我缺少很多相关的依赖。
root@ubuntu:/home/erlang# dpkg -i esl-erlang_21.0-1_ubuntu_artful_amd64.deb
Selecting previously unselected package esl-erlang.
(Reading database ... 60202 files and directories currently installed.)
Preparing to unpack esl-erlang_21.0-1_ubuntu_artful_amd64.deb ...
Unpacking esl-erlang (1:21.0) ...
dpkg: dependency problems prevent configuration of esl-erlang:
esl-erlang depends on libwxbase2.8-0 | libwxbase3.0-0 | libwxbase3.0-0v5; however:
Package libwxbase2.8-0 is not installed.
Package libwxbase3.0-0 is not installed.
Package libwxbase3.0-0v5 is not installed.
esl-erlang depends on libwxgtk2.8-0 | libwxgtk3.0-0 | libwxgtk3.0-0v5; however:
Package libwxgtk2.8-0 is not installed.
Package libwxgtk3.0-0 is not installed.
Package libwxgtk3.0-0v5 is not installed.
esl-erlang depends on libsctp1; however:
Package libsctp1 is not installed.
dpkg: error processing package esl-erlang (--install):
dependency problems - leaving unconfigured
Errors were encountered while processing:
esl-erlang
2、解决依赖问题
按照要求解决依赖:
例如:
root@ubuntu:/home/erlang# apt-get install libwxbase3.0-0v5
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
esl-erlang : Depends: libwxgtk2.8-0 but it is not installable or
libwxgtk3.0-0 but it is not installable or
libwxgtk3.0-0v5 but it is not going to be installed
Depends: libsctp1 but it is not going to be installed
Recommends: erlang-mode but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
这个时候你需要执行:
apt-get -f install
然后会让你同意输入一个y
。
大概需要五分钟去执行。
3、再次执行安装操作
root@ubuntu:/home/erlang# dpkg -i esl-erlang_21.0-1_ubuntu_artful_amd64.deb
(Reading database ... 79229 files and directories currently installed.)
Preparing to unpack esl-erlang_21.0-1_ubuntu_artful_amd64.deb ...
Unpacking esl-erlang (1:21.0) over (1:21.0) ...
Setting up esl-erlang (1:21.0) ...
root@ubuntu:/home/erlang#
4、检查是否安装成功
这样就安装成功了。
root@ubuntu:/home/erlang# erl
Erlang/OTP 21 [erts-10.0] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:1] [hipe]
Eshell V10.0 (abort with ^G)
1>
有图有真相
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我觉得,做技术最重要的是严谨,现在有些博客啊,到处搬运,都没有经过测试,就发出来,结果呢。
结果就是都不靠谱。