ShellScript to assume role by single command

README.md

1. Prepare profile in ~/.aws/credentials.
2. Change from_profile and to_profile to your profile name, then Run command.

from_profile=profile-A to_profile=profile-B sts=$(aws sts assume-role --profile "${from_profile}" --role-arn $(aws configure get "${to_profile}.role_arn") --role-session-name "${to_profile}-assume"); \
export AWS_ACCESS_KEY_ID=$(echo "${sts}" | jq -r '.Credentials.AccessKeyId'); \
export AWS_SECRET_ACCESS_KEY=$(echo "${sts}" | jq -r '.Credentials.SecretAccessKey'); \
export AWS_SESSION_TOKEN=$(echo "${sts}" | jq -r '.Credentials.SessionToken') \
export AWS_EXPIRE=$(echo "${sts}" | jq -r '.Credentials.Expiration')

credentials

# ~/.aws/credentials
[profile-A]
aws_access_key_id = AKIAxxxxxxxxxxxxxxxx
aws_secret_access_key = xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
[profile-B]
role_arn = arn:aws:iam::xxxxxxxxxxxx:role/iam-assume-role-name
source_profile = profile-A