# HG changeset patch
# User Guilhem Moulin <guilhem@fripost.org>
# Date 1446039856 -28800
# Node ID cdea5dbb17550f1e3ffa63d796a4a6bb7280961a
# Parent  b8f3620782091596240c0e3c49dc5e60998f9040
Mention -y flag

diff -r b8f362078209 -r cdea5dbb1755 dropbearkey.1
--- a/dropbearkey.1	Wed Oct 28 21:42:09 2015 +0800
+++ b/dropbearkey.1	Wed Oct 28 21:44:16 2015 +0800
@@ -9,6 +9,7 @@
 .I file
 [\-s
 .IR bits ]
+[\-y]
 .SH DESCRIPTION
 .B dropbearkey
 generates a
@@ -39,12 +40,19 @@
 Set the key size to
 .I bits
 bits, should be multiple of 8 (optional). 
+.TP
+.B \-y
+Just print the publickey and fingerprint for the private key in \fIfile\fR.
 .SH NOTES
 The program dropbearconvert(1) can be used to convert between Dropbear and OpenSSH key formats.
 .P
 Dropbear does not support encrypted keys. 
 .SH EXAMPLE
+generate a host-key:
  # dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
+
+extract a public key suitable for authorized_keys from private key:
+ # dropbearkey -y -f id_rsa | grep "^ssh-rsa " >> authorized_keys
 .SH AUTHOR
 Matt Johnston (matt@ucc.asn.au).
 .br