Created
March 19, 2015 19:22
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Add a tag "somekey" with "somevalue" to all EC2 instances that do not have that tag
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| aws ec2 create-tags --resources $(perl -MJSON -e '$d=[grep{$_->{State}{Name}eq"running"&&!$_->{Tags}{somekey}}map{map{$_->{Tags}={map{($_->{Key}=>$_->{Value})}@{$_->{Tags}}};$_}@{$_->{Instances}}}@{(decode_json scalar `aws ec2 describe-instances`)->{Reservations}}];print join(" ",map{$_->{InstanceId}}@$d)') --tags Key=somekey,Value=somevalue |
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