在system_profiler和网络中使用GeekTool时需要帮助安装程序

Question

大家好，

我已经创建了一个小的bash shell脚本，我想在GeekTool上使用它，但在我的iMac (11,1)和我的MacBook专业版(8,3)上使用相同的脚本时，我体验到了不同的结果。我正在使用networksetup和system_profiler拉取网络数据。到目前为止，我对这两者都有几次调用，但希望将其合并为对每个创建变量的进程的一次调用，以便在我的脚本中使用。到目前为止，我的脚本如下：

# Get Ethernet and Wi-Fi information and display it for GeekTool
WiFi=$(networksetup -getairportnetwork en1 | awk '{print $4 " " $5 " " $6 " " $7 " " $8}')
WiFi_IP=$(networksetup -getinfo Wi-Fi | grep -v IPv6 | awk '/IP address/ {print $3}')
SubMask=$(networksetup -getinfo Wi-Fi | awk '/Subnet mask/ {print $3}')
S2N=$(system_profiler SPAirPortDataType | awk '/Noise/ {print $4 " " $5 " " $6 " " $7 " " $8}')
TRate=$(system_profiler SPAirPortDataType | awk '/Rate/ {print $3 " Mbps"}')
echo  -e "\033[4;33m" AirPort

if [ "$WiFi_IP" = "" ];
    then echo "Not connected to wireless AP."
    else echo -e "Wi-Fi AP: " $WiFi "\nIP Address: " $WiFi_IP "\nSubnet Mask: " $SubMask "\nTransmit Rate: " $TRate
    fi

EthIP=$(networksetup -getinfo Ethernet | grep -v IPv6 | awk '/IP address/ {print $3}')
EthSubMask=$(networksetup -getinfo Ethernet | grep -v IPv6 | awk '/Subnet mask/ {print $3}')
echo -e "\033[4;33m" "\nEthernet"

if [ "$EthIP" = "" ];
    then echo "Not connected to wired network."
    else echo -e "IP Address: " $EthIP "\nSubnet Mask: " $EthSubMask
    fi

当我在GeekTool中创建一个外壳并输入脚本的路径时，在我的MacBook专业版上一切正常，但在我的iMac上，GeekTool只显示一次结果，然后在刷新时(我将其设置为15s)，结果就消失了，再也不会回到屏幕上了。虽然我知道我拥有的东西是有效的，但它对两个进程进行了太多的调用，我想将它合并到每个进程的一个调用中，将所需的信息提取到一个容器中，例如我可以从其中访问所述所需信息的数组。

换句话说，有没有人知道我如何只需调用networksetup一次，就能从-getairportnetwork en1和-getinfo Wi-Fi以及system_profiler SPAirPortDataType (每次耗时最长--大约5-8秒)获取所有收集的信息？

Answer 1

我稍微修改了一下我的极客工具脚本，省略了信噪比这件事。新的AirportStatus.sh文件如下所示：

#! /bin/bash

# echo -e "\033[0;30m"       echo in black
# echo -e "\033[0;31m"       echo in red
# echo -e "\033[0;32m"       echo in green
# echo -e "\033[0;33m"       echo in yellow
# echo -e "\033[0;34m"       echo in blue
# echo -e "\033[0;35m"       echo in magenta
# echo -e "\033[0;36m"       echo in cyan
# echo -e "\033[0;37m"       echo in white

# echo -e "\033[4;37m"       echo in white underlined

echo -e "\033[4;33m" "Airport"

# Get Airport status from OS X
Status=$(ifconfig en1 | awk '/status/ {print $2}')


if [ "$Status" = "inactive" ];
    then echo -e "\033[0;31m" "Status: " $Status "\nNot connected to wireless AP."
    else echo -e  "\033[0;32m" "Status" $Status

    # Get wireless stats from OS X

    WiFi=$(networksetup -getairportnetwork en1 | awk '{print $4 " " $5 " " $6 " " $7 " " $8}')
    WiFi_IP=$(networksetup -getinfo Wi-Fi | grep -v IPv6 | awk '/IP address/ {print $3}')
    SubMask=$(networksetup -getinfo Wi-Fi | awk '/Subnet mask/ {print $3}')
    TRate=$(system_profiler SPAirPortDataType | awk '/Transmit/' | sed 's/[^0-9]//g')

    # Get bytes in/out

    # get the current number of bytes in and bytes out
    myvar1=$(netstat -ib | grep -e en1 -m 1 | awk '{print $7}') #  bytes in
    myvar3=$(netstat -ib | grep -e en1 -m 1 | awk '{print $10}') # bytes out

    #wait one second
    sleep 1

    # get the number of bytes in and out one second later
    myvar2=$(netstat -ib | grep -e en1 -m 1 | awk '{print $7}') # bytes in again
    myvar4=$(netstat -ib | grep -e en1 -m 1 | awk '{print $10}') # bytes out again

    # find the difference between bytes in and out during that one second
    subin=$(($myvar2 - $myvar1))
    subout=$(($myvar4 - $myvar3))

    # convert bytes to megabytes
    mbin=$(echo "scale=2 ; $subin/1048576;" | bc) 
    mbout=$(echo "scale=2 ; $subout/1048576 ; " | bc)

    usedMB=$(echo "scale=2 ; $mbin+$mbout ; " | bc)
    AvailBW=$(echo "scale=2 ; $TRate-$usedMB ; " | bc)

    echo -e "\033[0;37m" "Wi-Fi AP: " "\033[0;36m" $WiFi "\033[0;37m" "\nIP Address: " "\033[0;36m" $WiFi_IP $3 "\033[0;37m" "\nSubnet Mask: " "\033[0;36m" $SubMask "\033[0;37m" "\nTransmit Rate: " "\033[0;36m" $TRate " Mbps\n" "\033[0;37m" "Data In: "  "\033[0;36m" $mbin "Mbps" "\n" "\033[0;37m" "Data Out: "  "\033[0;36m" $mbout "Mbps\n" "\033[0;37m" "Available Bandwidth: " "\033[0;36m" $AvailBW " Mbps"

    fi

我检查了是否处于活动状态，假设它最初处于非活动状态。如果不是，那么我放入大量的If语句，其中所有变量都被初始化并完成计算。只有一个对system_profiler的调用，就是检索传输速率的调用，但是我想知道我的无线网络的“线速”。这样做的效果并不像我希望的那样好，但它仍然是一个很好的练习，让你了解了在Mac上哪里可以获取信息，以及如何使用awk和see。我仍然有很多东西要学，但到目前为止，这是令人兴奋的。