Simple bash function to add AWS profile

aws_add_profile.sh

#!/bin/bash
#
# DESCRIPTION:
# * simple aws function that help you to add aws profile by just passing arguments
#
# USAGE:
#   1. Save this function in your ~/.bashrc or ~/.bash_profile or ~/.profile
#   2. Edit the places where required
#     2.1 replace <REGION> with your default region. Well region can be parametrised if u wish :D.
#         e.g. ap-southeast-1
#     2.2 replace <SOURCE-PROFILE> with your source profile in config.
#     2.3 replace <MFA-ARN> with your MFA ARN. If no MFA used then remove the whole line from the function.
#         e.g. arn:aws:iam::123123123:mfa:/user@example.com
#   3. Save and use the source the file, so you can use it easily.
#   4. aws_add_profile <profile-name> <aws-account-id> <aws-role>
#
# This is generic function, you have to modify it before use.
#
function aws_add_profile(){
   local config_file=~/.aws/config # change this path if yours different.

    if [ "$#" -ne 3 ] ; then
      echo -e "Usage: aws_add_profile <profile-name> <aws-account-id> <aws-role> \n\t Example: aws_add_profile admin-myawsp-rofile-dev 123654809 Admin"
    else
      profile=${1}
      aws_acc_id=${2}
      role=${3}
      echo "
[profile ${profile}]
role_arn = arn:aws:iam::${aws_acc_id}:role/${role}
source_profile = <SOURCE-PROFILE>
mfa_serial = <MFA-ARN>
region = <REGION>
" >> $config_file
    echo -e "AWS profile added successfully!"
   fi
}

aws_add_profile_sample.sh

# Sample function modified to use with your AWS config.
function aws_add_profile(){
   local config_file=~/.aws/config 

    if [ "$#" -ne 3 ] ; then
      echo -e "Usage: aws_add_profile <profile-name> <aws-account-id> <aws-role> \n\t Example: aws_add_profile admin-myawsp-rofile-dev 123654809 Admin"
    else
      profile=${1}
      aws_acc_id=${2}
      role=${3}
      echo "
[profile ${profile}]
role_arn = arn:aws:iam::${aws_acc_id}:role/${role}
source_profile = default
mfa_serial = arn:aws:iam::8767868768:mfa/user@example.com
region = ap-southeast-1
" >> $config_file
    echo -e "AWS profile added successfully!"
   fi
}