AWS Profile Changer in Bash

aws-bash

If you are like me and need to deal with multiple AWS profiles simultaneously, you need to keep switching between profiles. Many plugins are available for bash or zsh, but I want to keep it simple and only run the code that I understand.

You can add the below function to your bashrc to change the AWS_PROFILE environment variable on the fly. It will read the AWS config file and list all the available profiles; then, you can select the one you need.

function aws_profile() {

    local aws_home="$HOME/.aws"

    local profiles=(`\
        cat ${aws_home}/config | \
        grep profile | \
        sed 's/\[//g;s/\]//g' | \
        cut -d " " -f 2`);

    PS3="Select a profile: [none = 0] "

    select profile in ${profiles[@]}
    do
        selected=$profile;
        break;
    done

    unset $PS3;
    if [ ! -z "${profile}" ];
    then
        export AWS_PROFILE="${profile}";
        export AWS_REGION=$(cat ${aws_home}/config | sed -n "/${profile}/,/\[/p" | grep region | cut -d '=' -f 2 | sed 's/ //g')
        export AWS_ACCESS_KEY_ID=$(cat ${aws_home}/credentials | sed -n "/${profile}/,/\[/p" | grep aws_access_key_id | cut -d '=' -f 2 | sed 's/ //g')
        export AWS_SECRET_ACCESS_KEY=$(cat ${aws_home}/credentials | sed -n "/${profile}/,/\[/p" | grep aws_secret_access_key | cut -d '=' -f 2 | sed 's/ //g')
    fi

}

TODO: