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.\" ========================================================================
.\"
.IX Title "xpausers n"
.TH xpausers n "July 23, 2013" "version 2.1.15" "SAORD Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
\&\fBXPAUsers: Distinguishing Users\fR
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\s-1XPA\s0 normally distinguishes between users on a given host, but it is possible
to send data to access points belonging to other users.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
A single \s-1XPA\s0 name service typically serves all users on a given
machine.  Two users can register the same \s-1XPA\s0 access points on the
same machine without conflict, because the user's username is
registered with each access point and, by default, programs such as
xpaget and xpaset only process access points of the appropriate user.
For example:
.PP
.Vb 4
\&  XPA xpa1 gs 838e2f67:1262 eric
\&  XPA xpa2 gs 838e2f67:1266 eric
\&  XPA xpa1 gs 838e2f67:2523 john
\&  XPA xpa2 gs 838e2f67:2527 john
.Ve
.PP
Here the users \*(L"eric\*(R" and \*(L"john\*(R" both have registered the access
points xpa1 and xpa2. When either \*(L"john\*(R" or \*(L"eric\*(R" retrieves
information from xpa1, they will process only the access point
registered in their user name.
.PP
If you want to access another user's \s-1XPA\s0 access points on a single
machine, use the \-u [user] option on xpaset, xpaget, etc. For example,
if eric executes:
.PP
.Vb 1
\&  xpaget \-u john xpa1
.Ve
.PP
he will access John's xpa1 access point.Use \*(L"*\*(R" to access all users
on a given machine:
.PP
.Vb 1
\&  xpaget \-u "*" xpa1
.Ve
.PP
Note that the \s-1XPA\s0 Environment Variable
\&\s-1XPA_NSUSERS\s0 can be used to specify the default list of users to
process:
.PP
.Vb 1
\&  setenv XPA_NSUSERS "eric,john"
.Ve
.PP
will cause access points from both \*(L"eric\*(R" and \*(L"john\*(R" to be processed
by default.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
See xpa(n) for a list of \s-1XPA\s0 help pages
