How to create an EC2 instance with AWS CLI

1. Install aws CLI on your working station (Linux or Windows)

$aws configure 
AWS Access Key ID [****************GYFA]:
AWS Secret Access Key [****************DTIn]:
Default region name [us-east-1]:
Default output format [None]:
Available Tools

2. Create a key with following commnad

#aws ec2 create-key-pair --key-name ovi-key --query 'KeyMaterial' --output text > ovi-key.pem

3. Create an instance

#aws ec2 run-instances --image-id ami-6869aa05 --count 1 --instance-type t2.small --key-name ovi-key --security-group-ids sg-74ef3210 --subnet-id subnet-01ac3976 --associate-public-ip-address
{
    "OwnerId": "896477545246",
    "ReservationId": "r-ce672779",
    "Groups": [],
    "Instances": [
        {
            "Monitoring": {
                "State": "disabled"
            },
            "PublicDnsName": "",
            "RootDeviceType": "ebs",
            "State": {
                "Code": 0,
                "Name": "pending"
            },
            "EbsOptimized": false,
            "LaunchTime": "2016-10-05T14:30:51.000Z",
            "PrivateIpAddress": "172.30.0.240",
            "ProductCodes": [],
            "VpcId": "vpc-dfc7xxxx",
            "StateTransitionReason": "",
            "InstanceId": "i-c1a76xx7",
            "ImageId": "ami-6869aa05",
            "PrivateDnsName": "ip-172-30-0-240.ec2.internal",
            "KeyName": "ovi-key",
            "SecurityGroups": [
                {
                    "GroupName": "default",
                    "GroupId": "sg-74xx3210"
                }
            ],
            "ClientToken": "",
            "SubnetId": "subnet-01xx3976",
            "InstanceType": "t2.small",
            "NetworkInterfaces": [
                {
                    "Status": "in-use",
                    "MacAddress": "0a:84:92:2x:2x:95",
                    "SourceDestCheck": true,
                    "VpcId": "vpc-dfc7xxx",
                    "Description": "",
                    "NetworkInterfaceId": "eni-9f9xx999",
                    "PrivateIpAddresses": [
                        {
                            "PrivateDnsName": "ip-172-30-0-240.ec2.internal",
                            "Primary": true,
                            "PrivateIpAddress": "172.30.0.240"
                        }
                    ],
                    "PrivateDnsName": "ip-172-30-0-240.ec2.internal",
                    "Attachment": {
                        "Status": "attaching",
                        "DeviceIndex": 0,
                        "DeleteOnTermination": true,
                        "AttachmentId": "eni-attach-c3x01x76",
                        "AttachTime": "2016-10-05T14:30:51.000Z"
                    },
                    "Groups": [
                        {
                            "GroupName": "default",
                            "GroupId": "sg-74xf3211"
                        }
                    ],
                    "SubnetId": "subnet-01xx3976",
                    "OwnerId": "896477545299",
                    "PrivateIpAddress": "172.30.yyy.yyy"
                }
            ],
            "SourceDestCheck": true,
            "Placement": {
                "Tenancy": "default",
                "GroupName": "",
                "AvailabilityZone": "us-east-1a"
            },
            "Hypervisor": "xen",
            "BlockDeviceMappings": [],
            "Architecture": "x86_64",
            "StateReason": {
                "Message": "pending",
                "Code": "pending"
            },
            "RootDeviceName": "/dev/xvda",
            "VirtualizationType": "hvm",
            "AmiLaunchIndex": 0
        }
    ]
}

Note :

You can pass a shell script during the EC2 instance creation using

--user-data file://script_name.sh