.TH AUTHFS 4
.SH NAME
authfs \- present different authentication files
.SH SYNOPSIS
.B authfs
[
.B -a
.I authserver
]
[
.B -u
.I user
]
[
.B -h
.I hostowner
]
[
.B -pv 
]
.SH DESCRIPTION
.I Authfs
presents an alternate set of credentials via the
files 
.BR authcheck ,
.BR authenticator ,
.BR authserver ,
.BR hostowner ,
.BR key ,
and
.B user
in
.BR /dev ,
as well as a new 
.BR /net/cs .
.PP
The
.BR -a ,
.BR -u ,
and
.B -h
flags 
specify the default authentication
server, user name, and host owner, respectively.  They can
be changed at any time by writing strings into the obvious
files.
The
.B -p
option prompts for a password that will be used
to generate the key file. A great amount of debugging output
is produced by the
.B -v
option.
.PP
The
.BR authenticator ,
.BR authcheck ,
and
.B key
files behave identically to the ones that are presented by
.IR cons (3).
Unlike
those files,
they are not global:
changes to authentication information
(via, say, 
.IR aux/typepasswd )
are local to the namespace.
This is
useful for assuming a different identity on a per-window
basis.
.PP
The file
.B /net/cs
is replaced with one that behaves identically except that
.B $auth
is rewritten with the contents of
.B /dev/authserver
rather than an entry from the network database.
.SH EXAMPLES
Change credentials to 
boris
and set a new authentication server before dialing
kremvax.
.IP
.EX
authfs
echo boris >/dev/user
echo moscvax >/dev/authserver
aux/typepasswd
cpu -h kremvax
.EE
.PP
This may be shortened using command-line options:
.IP
.EX
authfs -u boris -a moscvax -p
cpu -h kremvax
.EE
.SH SOURCE
.B /sys/src/cmd/authfs.c
.SH SEE ALSO
.IR cons (3),
.IR auth (6),
.IR auth (8),
.IR ndb (8)