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+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)wait.1	8.1 (Berkeley) 6/5/93
+.\"
+.Dd June 5, 1993
+.Dt WAIT 1
+.Os
+.Sh NAME
+.Nm wait
+.Nd await process completion
+.Sh SYNOPSIS
+.Nm wait
+.Op Ar pid
+.Sh DESCRIPTION
+If invoked with no arguments, the
+.Nm wait
+utility waits until
+all existing child processes in the background
+have terminated.
+.Pp
+Available operands:
+.Bl -tag -width Ds
+.It Ar pid
+If a
+.Ar pid
+operand is specified, and it is the process ID of a
+background child process that still exists, the
+.Nm wait
+utility
+waits until that process has completed and consumes its
+status information, without consuming the status information
+of any other process.
+.Pp
+If a pid operand is specified that is not the process ID of
+a child background process that still exists,
+.Nm wait
+exits
+without waiting for any processes to complete.
+.El
+.Pp
+The
+.Nm wait
+utility exits with one of the following values:
+.Bl -tag -width Ds
+.It \&0
+The
+.Nm wait
+utility was invoked with no operands and
+all of the existing background child processes have
+terminated, or the process specified by the pid
+operand exited normally with 0 as its exit status.
+.It \&>\&0
+The specified process did not exist and its exit
+status information was not available, or the specified
+process existed or its exit status information
+was available, and it terminated with a non-zero
+exit status.
+.El
+.Pp
+If the specified process terminated abnormally due
+to the receipt of a signal, the exit status
+information of
+.Nm wait
+contains that termination status as
+well.
+.Sh STANDARDS
+The
+.Nm wait
+command is expected to be
+.St -p1003.2
+compatible.