Export AWS key variables based on profile name

aws.sh

# Shortcut for assigning a heredoc to a variable.
# http://stackoverflow.com/a/8088167
define() {
    # read will have exit status 1 whenever it assigns to a variable or it gets to EOF.
    read -r -d '' "${1}" || true
}

_other_aws_common_stuff() {
  export AWS_DEFAULT_PROFILE="${AWS_PROFILE}"
  local SCRIPT
  unset AWS_ACCESS_KEY_ID
  unset AWS_SECRET_ACCESS_KEY
  define SCRIPT <<EOF
try:
  # Prefer boto3
  from botocore.session import Session
  s = Session()
  c = s.get_credentials()
  print('export AWS_ACCESS_KEY_ID=' + c.access_key)
  print('export AWS_SECRET_ACCESS_KEY=' + c.secret_key)
except ImportError as e:
  # Try boto if boto3 isn't available.
  from boto.provider import Provider
  p = Provider('aws')
  print('export AWS_ACCESS_KEY_ID=' + p.get_access_key())
  print('export AWS_SECRET_ACCESS_KEY=' + p.get_secret_key())
EOF
  local RESULT
  RESULT=$(echo "${SCRIPT}" | python)
  eval "${RESULT}"
}


aws_unizin() {
  export AWS_PROFILE=unizin
  _other_aws_common_stuff
}


aws_cl() {
  export AWS_PROFILE=courseload
  _other_aws_common_stuff
}


aws_mine() {
  export AWS_PROFILE=personal
  _other_aws_common_stuff
}

I have awscli installed via pip install --user awscli.

In ~/.aws/config,

[profile unizin]
output = json
region = us-west-2


[profile courseload]
output = json
region = us-east-1


[profile personal]
output = json
region = us-west-2

Matching credentials are set up in ~/.aws/credentials.