Bash function to do AWS 2-factor auth

gistfile1.txt

#
# Bash function to peform AWS 2-factor auth.
#
# This assumes you have $AWS_CREDENTIAL_FILE set to an actual credentials file, and
# AWS_PROFILE set to the appropriate profile in said file.
#

awsmfa() {
  unset AWS_ACCESS_KEY_ID
  unset AWS_AWS_SECRET_ACCESS_KEY
  unset AWS_SESSION_TOKEN
  aws_code=$1
  if [ -z "$1" ]; then
    read -sp 'MFA Code: ' aws_code
    echo
  fi
  AWS_MFA_ID=$(aws iam list-mfa-devices | jq -r '.MFADevices[0].SerialNumber')
  AWS_STS_AUTH=$(aws sts get-session-token --serial-number "${AWS_MFA_ID}" --token-code "$aws_code")
  export AWS_ACCESS_KEY_ID="$(echo "$AWS_STS_AUTH" | jq -r .Credentials.AccessKeyId)"
  export AWS_SECRET_ACCESS_KEY="$(echo "$AWS_STS_AUTH" | jq -r .Credentials.SecretAccessKey)"
  export AWS_SESSION_TOKEN="$(echo "$AWS_STS_AUTH" | jq -r .Credentials.SessionToken)"
}