jq : 在字段中生成 UUID [英] jq : Generate UUID in field

问题描述

我需要使用 UUID 唯一地标记记录(用于关联 ID).我看不到通过选项直接执行此操作的方法，这可能吗?如果没有，是否有某种解决方法可以做到这一点?

I have a requirement to tag records uniquely with UUIDs (for a correlation id). I cant see a direct way to do this via the options, is such a thing possible? If not, is there some kind of workaround that might be able to do this?

甚至可以在 jq 中生成随机数或字符串吗?

Is it even possible to generate a random number or string in jq?

推荐答案

jq 目前不支持 UUID 生成，所以最好的办法是将 UUID 提供给 jq，例如沿着这些路线:

jq currently has no support for UUID generation, so your best bet would be to feed UUIDs in to jq, e.g. along these lines:

ruby -e 'require "securerandom"; p SecureRandom.uuid' | jq '{uuid: .}'
{
  "uuid": "5657dd65-a495-4487-9887-c7f0e01645c9"
}

遗憾的是，jq 的 PRNG 贡献尚未正式发布.有关用 jq 编写的 PRNG 生成器的示例，请参见例如罗塞塔代码:

The PRNG contributions for jq have unfortunately not yet made their way into an official release. For examples of PRNG generators written in jq, see e.g. rosettacode:

https://rosettacode.org/wiki/Linear_congruential_generator#jq

假设 uuid 生成器(例如 uuidgen)可用，您可以按以下方式使用 input 或 inputs:

Assuming the availability of a uuid generator such as uuidgen, you could use input or inputs along the following lines:

jq -nR '[range(0;10) | input]' < <(while true; do uuidgen ; done)

(请注意，此处已避免使用操作系统管道.)

(Notice that an OS pipe has been avoided here.)

这篇关于jq : 在字段中生成 UUID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！