问题描述
我有每行1个json文档的文件，每个文档中的字段start_id和end_id.我想使用jq提取它们并将它们打印在同一行上.
I have files with 1 json document per row and the fields start_id and end_id in each document. I'd like to use jq to extract these and print them on the same row.
到目前为止，我有:
cat part* | jq '"\(.start_id) \(.end_id)"' | sed s/\"//g | head
这可行，但是我需要sed删除双引号.
This works, but I need the sed to remove the double quotes.
为了改进我的jq-foo，有没有办法在不使用sed的情况下完成 ?
In order to improve my jq-foo, is there a way to do this without using sed?
例如给
{"start_id":1,"end_id":50}
{"start_id":50,"end_id":99}
{"start_id":99,"end_id":12}
获取
1 50
50 99
99 12
代替
"1 50"
"50 99"
"99 12"
推荐答案
默认情况下，jq将其输出格式化为有效的JSON值.这意味着字符串用引号引起来.
By default, jq formats its output to be a valid JSON value. This means that character strings are wrapped in quotes.
幸运的是，--raw-output或-r参数将覆盖该行为，因此您的字符串输出可以摆脱那些讨厌的引号;)
Fortunately, the --raw-output or -r parameter overrides that behaviour so your string output can be free of those nasty quotation marks ;)
来源: https://stedolan.github.io/jq/manual/
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