.Op Fl b Ar bits
.Op Fl N Ar new_passphrase
.Op Fl C Ar comment
-.Op Fl f Ar keyfile
+.Op Fl f Ar output_keyfile
.Nm ssh-keygen
.Fl p
.Op Fl P Ar old_passphrase
.Op Fl f Ar keyfile
.Nm ssh-keygen
.Fl x
-.Op Fl f Ar keyfile
+.Op Fl f Ar input_keyfile
.Nm ssh-keygen
.Fl X
-.Op Fl f Ar keyfile
+.Op Fl f Ar input_keyfile
.Nm ssh-keygen
.Fl y
-.Op Fl f Ar keyfile
+.Op Fl f Ar input_keyfile
.Nm ssh-keygen
.Fl c
.Op Fl P Ar passphrase
.Op Fl f Ar keyfile
.Nm ssh-keygen
.Fl l
-.Op Fl f Ar keyfile
+.Op Fl f Ar input_keyfile
.Nm ssh-keygen
.Fl R
.Sh DESCRIPTION