foysavas
/ helpers.rb
Created
January 31, 2011 18:12
Carrierwave, DataMapper, & Sinatra starring in "Imagine the Possibilities"
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| def is_ajax_request? | |
| if respond_to? :content_type | |
| if request.xhr? | |
| true | |
| else | |
| false | |
| end | |
| else | |
| false | |
| end |
lukeplausin
/ bash_aws_jq_cheatsheet.sh
Last active
August 29, 2024 20:27
AWS, JQ and bash command cheat sheet. How to query, cut and munge things in JSON generally.
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| # Count total EBS based storage in AWS | |
| aws ec2 describe-volumes | jq "[.Volumes[].Size] | add" | |
| # Count total EBS storage with a tag filter | |
| aws ec2 describe-volumes --filters "Name=tag:Name,Values=CloudEndure Volume qjenc" | jq "[.Volumes[].Size] | add" | |
| # Describe instances concisely | |
| aws ec2 describe-instances | jq '[.Reservations | .[] | .Instances | .[] | {InstanceId: .InstanceId, State: .State, SubnetId: .SubnetId, VpcId: .VpcId, Name: (.Tags[]|select(.Key=="Name")|.Value)}]' | |
| # Wait until $instance_id is running and then immediately stop it again | |
| aws ec2 wait instance-running --instance-id $instance_id && aws ec2 stop-instances --instance-id $instance_id | |
| # Get 10th instance in the account |