/usr/share/calc/help/freopen is in apcalc-common 2.12.4.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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freopen - close (if necessary) and reopen a filestream
SYNOPSIS
freopen(fs, mode [,filename])
TYPES
fs open or closed file stream
mode one of the strings "r", "w", "a", "r+", "w+, "a+"
filename string
return null or error value
DESCRIPTION
With two arguments, this function closes the file stream fs and
attempts to reopen it with the specified mode. A non-null value
is returned only if the attempt fails.
With three arguments, fs, if open, is closed, and an attempt is made to
open the file with the specified name and assign it to the stream
fs. A non-null value is returned only if the attempt fails.
EXAMPLE
; f = fopen("/tmp/junk", "w")
; fputs(f, "Leonard Euler")
; freopen(f, "r")
; fgets(f)
"Leonard Euler"
; !chmod u-w /tmp/junk
; freopen(f, "w")
Error 10013
LIMITS
none
LINK LIBRARY
none
SEE ALSO
errno, fclose, feof, ferror, fflush, fgetc, fgetline, fgets, files, fopen,
fprintf, fputc, fputs, fseek, fsize, ftell, isfile, printf, prompt
## Copyright (C) 1999-2006 Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## @(#) $Revision: 30.1 $
## @(#) $Id: freopen,v 30.1 2007/03/16 11:10:42 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/freopen,v $
##
## Under source code control: 1996/04/30 03:05:18
## File existed as early as: 1996
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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