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'\"
'\" Copyright (c) 1993 The Regents of the University of California.
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
.TH cd n "" Tcl "Tcl Built-In Commands"
.so man.macros
.BS
'\" Note: do not modify the .SH NAME line immediately below!
.SH NAME
cd \- Change working directory
.SH SYNOPSIS
\fBcd \fR?\fIdirName\fR?
.BE
.SH DESCRIPTION
.PP
Change the current working directory to \fIdirName\fR, or to the
home directory (as specified in the HOME environment variable) if
\fIdirName\fR is not given.
Returns an empty string.
Note that the current working directory is a per-process resource; the
\fBcd\fR command changes the working directory for all interpreters
and (in a threaded environment) all threads.
.SH EXAMPLES
.PP
Change to the home directory of the user \fBfred\fR:
.PP
.CS
\fBcd\fR ~fred
.CE
.PP
Change to the directory \fBlib\fR that is a sibling directory of the
current one:
.PP
.CS
\fBcd\fR ../lib
.CE
.SH "SEE ALSO"
filename(n), glob(n), pwd(n)
.SH KEYWORDS
working directory
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