65 lines
2.5 KiB
Plaintext
65 lines
2.5 KiB
Plaintext
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'\"
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'\" Copyright (c) 1993 The Regents of the University of California.
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'\" All rights reserved.
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'\"
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'\" Permission is hereby granted, without written agreement and without
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'\" license or royalty fees, to use, copy, modify, and distribute this
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'\" documentation for any purpose, provided that the above copyright
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'\" notice and the following two paragraphs appear in all copies.
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'\"
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'\" IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
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'\" FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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'\" ARISING OUT OF THE USE OF THIS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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'\" CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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'\"
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'\" THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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'\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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'\" AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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'\" ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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'\" PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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'\"
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'\" $Header: /user6/ouster/tcl/man/RCS/seek.n,v 1.1 93/06/07 16:48:27 ouster Exp $ SPRITE (Berkeley)
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'\"
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.so man.macros
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.HS seek tcl
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.BS
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'\" Note: do not modify the .SH NAME line immediately below!
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.SH NAME
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seek \- Change the access position for an open file
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.SH SYNOPSIS
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\fBseek \fIfileId offset \fR?\fIorigin\fR?
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.BE
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.SH DESCRIPTION
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.PP
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Change the current access position for \fIfileId\fR.
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\fIFileId\fR must have been the return
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value from a previous call to \fBopen\fR, or it may be \fBstdin\fR,
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\fBstdout\fR, or \fBstderr\fR to refer to one of the standard I/O
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channels.
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The \fIoffset\fR and \fIorigin\fR arguments specify the position at
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which the next read or write will occur for \fIfileId\fR.
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\fIOffset\fR must be an integer (which may be negative) and \fIorigin\fR
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must be one of the following:
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.TP
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\fBstart\fR
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The new access position will be \fIoffset\fR bytes from the start
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of the file.
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.TP
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\fBcurrent\fR
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The new access position will be \fIoffset\fR bytes from the current
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access position; a negative \fIoffset\fR moves the access position
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backwards in the file.
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.TP
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\fBend\fR
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The new access position will be \fIoffset\fR bytes from the end of
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the file. A negative \fIoffset\fR places the access position before
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the end-of-file, and a positive \fIoffset\fR places the access position
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after the end-of-file.
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.LP
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The \fIorigin\fR argument defaults to \fBstart\fR.
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This command returns an empty string.
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.SH KEYWORDS
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access position, file, seek
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