将 bash 输出转换为 JSON
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Convert bash output to JSON
提问by h.b
I am running the following command:
我正在运行以下命令：
sudo clustat | grep primary | awk 'NF{print ",""server:" ",""status:"}'
Results are:
结果是：
service:servicename,server:servername,status:started
service:servicename,server:servername,status:started
service:servicename,server:servername,status:started
service:servicename,server:servername,status:started
service:servicename,server:servername,status:started
My desired result is:
我想要的结果是：
{"service":"servicename","server":"servername","status":"started"}
{"service":"servicename","server":"servername","status":"started"}
{"service":"servicename","server":"servername","status":"started"}
{"service":"servicename","server":"servername","status":"started"}
{"service":"servicename","server":"servername","status":"started"}
I can't seem to put the qoutation marks withour srewing up my output.
我似乎无法在不增加输出的情况下加上引号。
回答by chepner
Use jq:
使用jq：
sudo clustat | grep primary |
jq -R 'split(" ")|{service:.[0], server:.[1], status:.[2]}'
The input is read as raw text, not JSON. Each line is split on a space (the argument to splitmay need to be adjusted depending on the actual input). jqensures that values are properly quoted when constructing the output objects.
输入被读取为原始文本，而不是 JSON。每行在一个空格上分开（split可能需要根据实际输入调整参数）。jq确保在构造输出对象时正确引用值。
回答by Charles Duffy
Don't do this: Instead, use @chepner's answer, which is guaranteed to generate valid JSON as output with all possible inputs (or fail with a nonzero exit status if no JSON representation is possible).
不要这样做：相反，使用@chepner's answer，它保证使用所有可能的输入生成有效的 JSON 作为输出（或者如果没有 JSON 表示是可能的，则以非零退出状态失败）。
The below is only tested to generate valid JSON with the specific inputs shown in the question, and will quite certainly generate output that is notvalid JSON with numerous possible inputs (strings with literal quotes, strings ending in literal backslashes, etc).
以下只进行测试，以与该问题所示的特定输入有效的JSON，并会相当肯定产生输出不与许多可能的输入（与文字引号中的字符串，在文字反斜杠结尾的字符串，等等），有效的JSON。
sudo clustat |
awk '/primary/ {
print "{\"service\":\"" "\",\"server\":\"" "\",\"status\":\"""\"}"
}'
