similar to "-h" on chown, chmod, etc, causing the operation to occur
on a final symlink in the provided path, rather than its target.
Obtained from: TrustedBSD Project
- Gracefully handle the case where standard input is missing
a newline at EOF.
- Exit with status 1 instead of -1 (really 255) on error.
- Add a Diagnostics section to the manual page documenting
exit status.
Approved by: rwatson