AWS cli: rework EBS volume on AMI launch: switch to SSD, "delete on termination" to true

aws
    ec2
        run-instances
            --image-id
                ami-aaaaaa
            --instance-type
                hi1.4xlarge
            --security-group-ids
                sg-eeeeeeee
            --subnet-id
                subnet-cccccccc
            --block-device-mappings
                '[
                    {
                        "DeviceName":"/dev/sdb",
                        "VirtualName":"ephemeral0"
                    },
                    {
                        "DeviceName":"/dev/sdc",
                        "VirtualName":"ephemeral1"
                    },
                    {
                        "DeviceName":"/dev/sdd",
                        "Ebs":
                        {
                            "SnapshotId":"snap-6",
                            "VolumeType":"gp2",
                            "DeleteOnTermination":"true"
                        }
                    }
                ]'
            --region
                us-east-1

Switch to high IOPS

aws
    ec2
        run-instances
            --image-id
                ami-aaaaaa
            --instance-type
                hi1.4xlarge
            --security-group-ids
                sg-eeeeeeee
            --subnet-id
                subnet-cccccccc
            --block-device-mappings
                '[
                    {
                        "DeviceName":"/dev/sdb",
                        "VirtualName":"ephemeral0"
                    },
                    {
                        "DeviceName":"/dev/sdc",
                        "VirtualName":"ephemeral1"
                    },
                    {
                        "DeviceName":"/dev/sdd",
                        "Ebs":
                        {
                            "SnapshotId":"snap-6",
                            "VolumeType":"io1",
                            "Iops":4000,
                            "DeleteOnTermination":"true"
                        }
                    }
                ]'
            --region
                us-east-1

Double looping with bash

Neat:

1. for ITEM in $(find /cassandra/data -type d -name snapshots)
1. do for DIR in $(find ${ITEM} -maxdepth 1 -mindepth 1 -type d -mtime -1)
1. do echo $ITEM $DIR
2. done
2. done

ec2-create-image: attached EBS volumes are snapshot and mapped

"ec2-create-image does snapshot the attached EBS volumes and add a block device mapping for those snapshots in the created AMI"
Taken: https://forums.aws.amazon.com/message.jspa?messageID=211674

Quick CLI screenshots on Linux or Openbox / Fluxbox

1. sudo apt-get -y install imagemagick eog
2. import myscreenshot.jpg
1. select portion of screen with the crosshairs
3. eog myscreenshot.jpg