.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.47.6. .TH U2F-HOST "1" "May 2019" "u2f-host 1.1.10" "User Commands" .SH NAME u2f-host \- Yubico Universal 2nd Factor (U2F) Host Tool .SH SYNOPSIS .B u2f-host [\fI\,OPTIONS\/\fR]... .SH DESCRIPTION u2f\-host 1.1.10 .PP Perform U2F host\-side operations on the command line. Reads challenge from standard input and writes a response to standard output. .TP \fB\-h\fR, \fB\-\-help\fR Print help and exit .TP \fB\-V\fR, \fB\-\-version\fR Print version and exit .TP \fB\-o\fR, \fB\-\-origin\fR=\fI\,STRING\/\fR Origin URL to use. .TP \fB\-a\fR, \fB\-\-action\fR=\fI\,ENUM\/\fR Action to take. (possible values="register", "authenticate", "sendrecv") .TP \fB\-t\fR, \fB\-\-touch\fR Invert user\-presence flag (on by default) (default=off) .TP \fB\-d\fR, \fB\-\-debug\fR Print debug information to standard error (default=off) .TP \fB\-c\fR, \fB\-\-command\fR=\fI\,STRING\/\fR Command for sendrecv action .SH "REPORTING BUGS" Report bugs at .