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+.\" Copyright (c) 1980, 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" 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.
+.\"
+.\"     @(#)cd.1	8.1 (Berkeley) 6/5/93
+.\"
+.Dd June 5, 1993
+.Dt CD 1
+.Os BSD 4
+.Sh NAME
+.Nm cd
+.Nd change working directory
+.Sh SYNOPSIS
+.Nm cd
+.Ar directory
+.Sh DESCRIPTION
+.Ar Directory
+is an absolute or relative pathname which becomes the new working
+directory.
+The interpretation of a relative pathname by cd depends on the CDPATH
+environment variable (see below).
+.Sh ENVIRONMENT
+The following environment variables affect the execution of cd:
+.Pp
+.Bl -tag -width indent
+.It Ev CDPATH
+If the
+.Ar directory
+operand does not begin with a slash (/) character, and the first
+component is not dot (.) or dot-dot (..),
+.Nm cd
+searches for the directory relative to each directory named in the
+.Ev CDPATH
+variable, in the order listed.
+The new working directory is set to the first matching directory found.
+An empty string in place of a directory pathname represents the current
+directory.
+If the new working directory was derived from
+.Ev CDPATH ,
+it will be printed to the standard output.
+.It Ev HOME
+If
+.Nm cd
+is invoked without arguments and the
+.Ev HOME
+environment variable exists and contains a directory name, that directory
+becomes the new working directory.
+.El
+.Pp
+See
+.Xr csh 1
+for more information on environment variables.
+.Pp
+The
+.Nm cd
+utility exits 0 on success, and >0 if an error occurs.
+.Sh SEE ALSO
+.Xr csh 1 ,
+.Xr pwd 1 ,
+.Xr sh 1 ,
+.Xr chdir 2
+.Sh STANDARDS
+The
+.Nm cd
+command is expected to be
+.St -p1003.2
+compatible.