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+.\"-
+.\" Copyright(c) 2024 Baptiste Daroussin <bapt@FreeBSD.org>
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd May 22, 2024
+.Dt MDO 1
+.Os
+.Sh NAME
+.Nm mdo
+.Nd execute commands as another user
+.Sh SYNOPSIS
+.Nm
+.Op Fl u Ar username
+.Op Fl i
+.Op command Op args
+.Sh DESCRIPTION
+The
+.Nm
+utility executes the specified
+.Ar command
+as user
+.Ar username .
+.Pp
+If no
+.Ar username
+is provided it defaults to the
+.Va root
+user.
+If no
+.Ar command
+is specified, it will execute the shell specified as
+.Va SHELL
+environnement variable, falling back on
+.Pa /bin/sh .
+.Pp
+The
+.Fl i
+option can be used to only call
+.Fn setuid
+and keep the group from the calling user.
+.Sh SEE ALSO
+.Xr su 1
+.Xr mac_do 4