Question

我运行以下命令：

sudo clustat | awk '/primary/ {print "{\"" $1 "\",\"server\":\"" $2 "\",\"status\":\""$3"\"}"}' |sed 's/\b:\b/":"/' >> test.log

这给了我以下结果：

{"service":"serviceA-primary","server":"serverA","status":"started"}
{"service":"service1-primary","server":"server1","status":"started"}
{"service":"service2-primary","server":"server2","status":"started"}
{"service":"service3-primary","server":"server3","status":"started"}
{"service":"service4-primary","server":"server4","status":"started"}

如何在每个字符串的开头附加时间戳？我尝试了不同的awk或sed命令，但是搞砸了我的输出。

即：

#!/bin/bash
TIMESTAMP=$(date -Is)

sudo clustat | awk -v TS="${TIMESTAMP}" ' '/primary/ {print "{"{\"timestamp\": \""TS"\", \"" $1 "\",\"server\":\"" $2 "\",\"status\":\""$3"\"}"}' |sed 's/\b:\b/":"/' >> test.log

所需的输出是：

{"timestamp": "2016-10-11T18:44:39+0000", "service":"serviceA-primary","server":"serverA","status":"started"}
{"timestamp": "2016-10-11T18:44:39+0000", "service":"service1-primary","server":"server1","status":"started"}
{"timestamp": "2016-10-11T18:44:39+0000", "service":"service2-primary","server":"server2","status":"started"}
{"timestamp": "2016-10-11T18:44:39+0000", "service":"service3-primary","server":"server3","status":"started"}
{"timestamp": "2016-10-11T18:44:39+0000", "service":"service4-primary","server":"server4","status":"started"}

如何获得所需的输出？

Answer 1

你基本上拥有它，只需要一些引号和反斜杠需要解读。

我还用awk中的sub调用替换了sed命令，将所有内容保存在一个命令中（同样，因为在你不想替换的时间戳中有一个:，它在awk中实际上更简单。）

$ ... | awk -v TS="${TIMESTAMP}" '/primary/ {sub(":","\":\"",$1); print "{\"timestamp\":\""TS"\", \"" $1 "\",\"server\":\"" $2 "\",\"status\":\""$3"\"}"}'

{"timestamp":"2016-10-11T18:44:39+0000", "service":"nfssvc-primary","server":"clusternode2.example.com","status":"starting"}

将时间戳附加到命令输出

1 个答案: