今天给大家介绍的是一款名叫mac-wifi的命令行工具，它可以管理macOS系统的无线网络，并且还提供了交互式Shell。
mac-wifi
mac-wifi脚本可以查询或管理macOS平台上的WiFi配置以及网络环境信息，脚本代码在最小化的类中实现了针对macOS环境的设计逻辑，并且允许开发者轻松地添加针对其他操作系统的支持，但是目前该工具仅支持macOS操作系统。
该工具可以在单一命令行或交互式模式下运行，交互式模式使用了pry gem，并可提供类似Rubyists或其他REPL用户的交互式接口。
在使用这款工具时，你甚至都不需要下载整个代码库，或者进行任何的安装，你只需要运行bin/mac-wifi脚本文件就可以了。
下载地址
依赖组件
目前，本项目只需要使用下列两个gem：pry：提供交互式Shell
awesome_print(可选)：在非交互模式下提供更优化的输出结果
工具使用
你可以使用“h”或“help”参数来查看所有可使用的命令：➜ mac-wifi git:(master) ✗ ./mac-wifi h
mac-wifi version 1.1.0 -- Availablecommands are:
ci - connected to Internet(not just wifi on)?
co[nnect] network-name - turns wifi on, connects to network-name
cy[cle] - turns wifi off, then on,preserving network selection
d[isconnect] - disconnects from current network,does not turn off wifi
h[elp] - prints this help
i[nfo] - prints wifi-relatedinformation
lsp[referred] - lists preferred (not necessarilyavailable) networks
lsa[vailable] - lists available networks
n[etwork_name] - name (SSID) of currently connectednetwork
on - turns wifi on
of[f] - turns wifi off
pa[ssword] network-name - shows passwordfor preferred network-name
q[uit] - exits this program(interactive shell mode only)
r[m] network-name - removes network-name from thepreferred networks list
s[hell] - opens an interactive pryshell (command line only)
t[ill] - returns when the desiredInternet connection state is true. Options:
'on'/:on or 'off'/:off
wait interval, inseconds (optional, defaults to 0.5 seconds)
w[ifion] - is the wifi on?
x[it] - exits this program(interactive shell mode only)
When in interactive shell mode:
*use quotes for string parameters such as method names.
*for pry commands, use prefix `%`.
该工具是基于Mac命令行工具实现的，但这并不是最佳的解决方案。本来我更愿意去使用macOS的系统调用，但现在的这种方法可以提高我开发脚本的速度。
更好的输出结果
如果你想在非交互模式下获取更形式化的输出结果(使用info命令)，你需要安装awesome_print gem，否则你只能使用“pp”命令了(效果不够好)。因此我建议大家安装awesome_print，安装命令如下：gem install awesome_print
查看底层操作系统命令和输出
如果你想查看macOS命令以及相应的输出，你可以设置环境变量MAC_WIFI_OPTS为-v(使用info命令进行演示)：export MAC_WIFI_OPTS=-v
./mac-wifi i
或者MAC_WIFI_OPTS=-v ./mac-wifi i
使用交互式Shell
如果当你尝试运行shell时程序崩溃的话，你可以尝试更新pry或pry-byebug。操作命令如下：gem install pry
gem install pry-byebug
使用样例
单一命令行调用mac-wifi i # 打印输出WiFi信息
mac-wifi lsa # 输出可用网络
mac-wifi lsp # 输出优先选择的网络
mac-wifi co a-network a-password # 与一个需要密码的网络进行连接
mac-wifi co a-network #与一个不需要密码的网络进行连接
mac-wifi t on && say "Internetconnected" # 当与一个网络连接成功之后播放消息
交互式Shell命令# Print out wifi info:
i
# Cycle (off/on) the network then connectto the specified network not requiring a password
> cycle; connect 'my-network'
# Cycle (off/on) the network, then connectto the same network not requiring a password
> @name = network_name; cycle; connect@name
# Cycle (off/on) the network then connectto the specified network using the specified password
> cycle; connect 'my-network','my-password'
> @i = i; puts "You are connectedon port #{@i[:port]} to #{@i[:network]} on IP address #{@i[:ip_address]}."
You are connected on port en0 to .@ AISSUPER WiFi on IP address 172.27.145.225.
> puts "There are #{lsp.size}preferred networks."
There are 341 preferred networks.
# Delete all preferred networks whose namesbegin with "TOTTGUEST", the hard way:
> lsp.grep(/^TOTTGUEST/).each { |n|rm(n) }
# Delete all preferred networks whose namesbegin with "TOTTGUEST", the easy way.
# rm can take multiple network names, butthey must be specified as separate parameters; thus the '*'.
> rm(*lsp.grep(/^TOTTGUEST/))
# Define a method to wait for the Internetconnection to be active.
# (This functionality is included in the`till` command.)
# Call it, then output celebration message:
[17] pry(#)> defwait_for_internet; loop do; break if ci; sleep 0.5; end; end
[18] pry(#)>wait_for_internet; puts "Connected!"
Connected!
# Same, but using a lambda instead of amethod so we can use a variable name
# and not need to worry about method namecollision:
@wait_for_internet = -> { loop do; breakif ci; sleep 0.5; end }
@wait_for_internet.() ; puts"Connected!"
Connected!
许可证协议
本开源项目遵循 MIT 许可证
* 参考来源：macwifi，FB小编Alpha_h4ck编译，转载请注明来自
