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Bash 阻止变量作为输入执行

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Bash 阻止变量作为输入执行

我有一个 bash 脚本，需要使用 curl 将查询发送到 rest api 服务器。

我正在尝试这样做：

$(curl -m100000000000000000000000000000000 -X POST -H "Content-Type: application/json" -d'{"queryType":"SQL", "query": "create table hdfs.bigdata.`databases/'$cleantn'/'$timestamp'` AS (SELECT * FROM dfs.`'$tempfile'`)"}' http://localhost:8047/query.json)

我无法让它工作。* 正在由 bash 进行评估

将其放入变量中仍然不起作用

query='{"queryType":"SQL", "query": "create table hdfs.bigdata.`databases/'$cleantn'/'$timestamp'` AS (SELECT * FROM dfs.`'$tempfile'`)"}'
$(curl -m100000000000000000000000000000000 -X POST -H "Content-Type: application/json" -d''$query'' http://localhost:8047/query.json)
#or
$(curl -m100000000000000000000000000000000 -X POST -H "Content-Type: application/json" -d"$query" http://localhost:8047/query.json)

答案1

query='{"queryType":"SQL", "query": "create table hdfs.bigdata.`databases/'$cleantn'/'$timestamp'` AS (SELECT * FROM dfs.`'$tempfile'`)"}'

交换引号。bash 不会处理语音引号中的任何内容""或带有转义符的内容\

以上内容变为：

query="{'queryType':'SQL', 'query': 'create table hdfs.bigdata.`databases/'$cleantn'/'$timestamp'` AS (SELECT * FROM dfs.`'$tempfile'`)'}"

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