Delete AWS VPC including dependencies

delete-vpc.sh

#!/bin/sh
#
# Delete a VPC and its dependencies

if [ -z "$1" ] then
    echo "usage: $0 <vpcid>"
    exit 64
fi
vpcid="$1"

# Delete subnets
for i in `aws ec2 describe-subnets --filters Name=vpc-id,Values="${vpcid}" | grep subnet- | sed -E 's/^.*(subnet-[a-z0-9]+).*$/\1/'`; do aws ec2 delete-subnet --subnet-id=$i; done

# Detach internet gateways
for i in `aws ec2 describe-internet-gateways --filters Name=attachment.vpc-id,Values="${vpcid}" | grep igw- | sed -E 's/^.*(igw-[a-z0-9]+).*$/\1/'`; do aws ec2 detach-internet-gateway --internet-gateway-id=$i --vpc-id=vpc-3279eb57; done

# Delete internet gateways
for i in `aws ec2 describe-internet-gateways --filters Name=attachment.vpc-id,Values="${vpcid}" | grep igw- | sed -E 's/^.*(igw-[a-z0-9]+).*$/\1/'`; do aws ec2 delete-internet-gateway --internet-gateway-id=$i; done

# Delete security groups (ignore message about being unable to delete default security group)
for i in `aws ec2 describe-security-groups --filters Name=vpc-id,Values="${vpcid}" | grep sg- | sed -E 's/^.*(sg-[a-z0-9]+).*$/\1/' | sort | uniq`; do aws ec2 delete-security-group --group-id $i; done

# Delete the VPC
aws ec2 delete-vpc --vpc-id ${vpcid}

2 major issues:

1. Line 5 needs to have a ; between ] and then
2. Line 15 has your VPC ID hardcoded in it instead of using the $vpcid variable

I would also suggest:

1. Use #!/bin/bash -eu
   • It's not worth trying to make generic Posix script.
   • It's best to not have scripts continue when they encounter an error or try to use an undefined variable.
2. Put a || true at the end of your delete-security-group command because trying to delete the default security group gives an error.

can you help me by providing a script that can delete all vpc, including its all dependencies, in any region for my login in aws?

In my case, we also need to delete the route table (custom one) before deleting the vpc.

FWIW, I use --query to do that:

for id in $(aws ec2 describe-security-groups --filters Name=vpc-id,Values="${vpcid}" --query 'SecurityGroups[*].GroupId' --output text); do
    aws ec2 delete-security-group --group-id $id
done

@blakelead that's better but still won't delete security groups which are referenced by other security groups (that's a pain-in-the-butt problem to solve).