Ken Williams kenahoo

## ec2-instance-subnet-id.md

      
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                samkeen
                / ec2-instance-subnet-id.md
            
            
              Last active
              January 23, 2024 17:07
            
              
                Get the subnet and VPC id of a running EC2 instance
              
          
    First get the Interface mac address, then use that to run the full command
INTERFACE=$(curl --silent http://169.254.169.254/latest/meta-data/network/interfaces/macs/)
SUBNET_ID=$(curl --silent http://169.254.169.254/latest/meta-data/network/interfaces/macs/${INTERFACE}/subnet-id)
VPC_ID=$(curl --silent http://169.254.169.254/latest/meta-data/network/interfaces/macs/${INTERFACE}/vpc-id)

echo SUBNET_ID

  
## heredoc-dockerfile.snip
#printf
RUN printf '#!/bin/bash\n\
echo hello world from line 1\n\
echo hello world from line 2'\
>> /tmp/hello

#echo
RUN echo -e '#!/bin/bash\n\
echo hello world from line 1\n\
echo hello world from line 2'\
	#printf
	RUN printf '#!/bin/bash\n\
	echo hello world from line 1\n\
	echo hello world from line 2'\
	>> /tmp/hello

	#echo
	RUN echo -e '#!/bin/bash\n\
	echo hello world from line 1\n\
	echo hello world from line 2'\