User name of the current user
Tries the LOGNAME, USER, LNAME, USERNAME
environment variables first. Then it tries the id command on Unix-like
platforms and whoami on Windows.
username(fallback = NULL)
fallback |
If not |
The user name of the current user.
Other user names: email_address,
fullname, gh_username,
whoami
## Not run: username() ## End(Not run)
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