如何将输出转换为.JSON并将其保存为.json文件

Question

获取系统信息

#!/bin/bash

readarray -t array <<< "$(df -h)"

var=$(echo "${array[1]}"| grep -aob '%' | grep -oE '[0-9]+')

echo "${array[3]:$var-3:4}

echo -e "Manufacturer:\t"`cat /sys/class/dmi/id/chassis_vendor`

echo -e "Product Name:\t"`cat /sys/class/dmi/id/product_name`

echo -e "Version:\t"`cat /sys/class/dmi/id/bios_version`

echo -e "Serial Number:\t"`cat /sys/class/dmi/id/product_serial`

echo -e "PC Name:\t"`hostname`

echo -e "Operating System:\t"`hostnamectl | grep "Operating System" | cut 
              -d ' ' -f5-`

echo -e "Architecture:\t"`arch`

echo -e "Processor Name:\t"`awk -F':' '/^model name/ {print $2}' 
              /proc/cpuinfo | uniq | sed -e 's/^[ \t]*//'`

echo -e "Memory:\t" `dmidecode -t 17 | grep "Size.*MB" | awk '{s+=$2} END 
                {print s / 1024 "GB"}'`

echo -e "HDD Model:\t" `cat /sys/block/sda/device/model`

echo -e "System Main IP:\t"`hostname -I`

我想像这样显示我的输出

    ({"Manufacturer":"Lenovo","Product Name":"Thinkpad":"Version":"T590","Serial Number":"1234567890" })

Answer 1

这是你真正的任务还是很简单的任务？如果是真的，你可以用引号和大括号重写这个脚本，这不是很多工作。请在第三代码行中提到漏掉的结尾双引号。

#!/bin/bash
readarray -t array <<< "$(df -h)"

var=$(echo "${array[1]}"| grep -aob '%' | grep -oE '[0-9]+')

echo "${array[3]:$var-3:4}"

echo -e "({\"Manufacturer\":\""`cat /sys/class/dmi/id/chassis_vendor`"\","
echo -e "\"Product Name\":\""`cat /sys/class/dmi/id/product_name`"\","
echo -e "\"Version\":\""`cat /sys/class/dmi/id/bios_version`"\","
echo -e "\"Serial Number\":\""`cat /sys/class/dmi/id/product_serial`"\","
echo -e "\"PC Name\":\""`hostname`"\","
echo -e "\"Operating System\":\""`hostnamectl | grep "Operating System" | cut -d ' ' -f5-`"\","
echo -e "\"Architecture\":\""`arch`"\","
echo -e "\"Processor Name\":\""`awk -F':' '/^model name/ {print $2}' /proc/cpuinfo | uniq | sed -e 's/^[ \t]*//'`"\","
echo -e "\"Memory\":\"" `dmidecode -t 17 | grep "Size.*MB" | awk '{s+=$2} END {print s / 1024 "GB"}'`"\","
echo -e "\"HDD Model\":\""`cat /sys/block/sda/device/model`"\","
echo -e "\"System Main IP\":\""`hostname -I`"\"})"

要重定向这个输出，您可以使用几种方法。首先，您可以在调用脚本时使用重定向，如

script.sh > result.json. 

第二，(如果您希望始终使用相同的文件名)--您可以在脚本的开头添加以下行：

exec > filename.json

第三种方法是用大括号包围您想要的输出，并重定向这个部分：

#!/bin/bash
readarray -t array <<< "$(df -h)"

var=$(echo "${array[1]}"| grep -aob '%' | grep -oE '[0-9]+')

echo "${array[3]:$var-3:4}"

{echo -e "({\"Manufacturer\":\""`cat /sys/class/dmi/id/chassis_vendor`"\","
echo -e "\"Product Name\":\""`cat /sys/class/dmi/id/product_name`"\","
echo -e "\"Version\":\""`cat /sys/class/dmi/id/bios_version`"\","
echo -e "\"Serial Number\":\""`cat /sys/class/dmi/id/product_serial`"\","
echo -e "\"PC Name\":\""`hostname`"\","
echo -e "\"Operating System\":\""`hostnamectl | grep "Operating System" | cut -d ' ' -f5-`"\","
echo -e "\"Architecture\":\""`arch`"\","
echo -e "\"Processor Name\":\""`awk -F':' '/^model name/ {print $2}' /proc/cpuinfo | uniq | sed -e 's/^[ \t]*//'`"\","
echo -e "\"Memory\":\"" `dmidecode -t 17 | grep "Size.*MB" | awk '{s+=$2} END {print s / 1024 "GB"}'`"\","
echo -e "\"HDD Model\":\""`cat /sys/block/sda/device/model`"\","
echo -e "\"System Main IP\":\""`hostname -I`"\"})"} > filename.json

我想提出的最后一种方法是在执行后修改脚本的输出。下面的命令将完全满足您的需要(但是第一行将以相同的方式处理，并且将向其中添加一个空字符串，为了避免它，您可以尝试第三种输出重定向方法)：

echo $(sed '$ s/,/)}/' <<< $(awk -F ":" 'BEGIN {OFS=""; print "({";}  { print "\"",$1,"\":\"",$2,"\",";} ' filename.json) | tr '\n' ' ') > filename.json

这里的-F用于向每个字段添加引号(-F标志的意思是‘字段分隔符’)，OFS设置为空字符串以避免额外的空格。然后sed删除最后的逗号(我知道使用awk也是可能的，但这个方法看起来要简单得多，IMO)。tr用于用空格替换所有换行符。输出被重定向到同一个文件。开始的回显向输出的末尾添加换行符。