【发布时间】:2020-10-11 05:54:04
【问题描述】:
此命令返回由空格分隔的所有 AWS 区域:
aws ec2 describe-regions --query 'Regions[*].RegionName' --output text
eu-north-1 ap-south-1 eu-west-3 eu-west-2 eu-west-1 ap-northeast-2 ap-northeast-1 sa-east-1 ca-central-1 ap-southeast-1 ap-southeast-2 eu-central-1 us-east-1 us-east-2 us-west-1 us-west-2
我正在尝试将其通过管道传输到 xargs,但它会将其视为单个字符串:
aws ec2 describe-regions --query 'Regions[*].RegionName' --output text | gxargs -I {} aws cloudformation list-stacks --region {}
Invalid endpoint: https://cloudformation.eu-north-1 ap-south-1 eu-west-3 eu-west-2 eu-west-1 ap-northeast-2 ap-northeast-1 sa-east-1 ca-central-1 ap-southeast-1 ap-southeast-2 eu-central-1 us-east-1 us-east-2 us-west-1 us-west-2.amazonaws.com
gxargs: aws: exited with status 255; aborting
gxargs 只是 gnu xargs(我在 Mac 上)。
另外,尝试使用 jmespath 从具有特定分隔符的数组创建字符串(我可以与 xargs 一起使用):
aws ec2 describe-regions --query 'Regions[*].join(",",@.RegionName)'
In function join(), invalid type for value: None, expected one of: ['string'], received: "null"
编辑:只是跟进,这就是我的结论。它坚持在找不到堆栈时抛出错误 - 可能与其他 aws cli 命令相同
aws ec2 describe-regions --query 'Regions[*].RegionName' --output text | gxargs -n 1 sh -c 'aws cloudformation describe-stacks --stack-name findme --region $0 || true'
【问题讨论】:
标签: bash amazon-web-services aws-cli xargs jmespath