yubikey

the utility scripts overwrites existing files and configuration as it executes each instruction.
In case the script fails for some reason, all the modified files are left as it is, which sometimes corrupts the existing configuration.

It will be useful if the script backup relevant files and restore them in case of error.

Describe the bug
I have noticed that app-link URLs like: https://company.okta.com/home/amazon_aws/0obm6u4wyuVYgbLdJ0x7/172 cause parsing error in okta_auth_config.py at line 45 (version 0.4.4).
It is caused by an underscore character '_' that should be encoded prior verification like '%5F'.

Traceback (most recent call last):
  File "/Users/nowam1/Library/Python/3.7/bin/okta-awsc