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140 lines
4.3 KiB
Groff
140 lines
4.3 KiB
Groff
.\" $OpenBSD: strings.1,v 1.2 1996/06/26 05:39:30 deraadt Exp $
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.\" $NetBSD: strings.1,v 1.4 1994/12/10 11:54:28 jtc Exp $
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.\"
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.\" Copyright (c) 1980, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)strings.1 8.1 (Berkeley) 6/6/93
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.\"
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.TH STRINGS 1 "June 7, 2016" "Apple, Inc."
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.SH NAME
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strings \- find the printable strings in a object, or other binary, file
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.SH SYNOPSIS
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.B strings
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[
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.B \-
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] [
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.B \-a
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] [
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.B \-o
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] [
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.B \-t
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.I format
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] [
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\fB\-\fInumber\fR
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] [
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.B \-n
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.I number
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] [--] [file ...]
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.SH DESCRIPTION
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.I Strings
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looks for ASCII strings in a binary file or standard input.
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.I Strings
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is useful for identifying random object files and many other things.
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A string is any sequence of 4 (the default) or more printing characters
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[ending at, but not including, any other character or EOF]. Unless the
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.B \-
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flag is given,
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.I strings
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looks in all sections of the object files except the (\_\^\_TEXT,\_\^\_text)
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section. If no files are specified standard input is read.
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.PP
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The file
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arguments may be of the form
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.IR "libx.a(foo.o)" ,
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to request information about only that object file and not
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the entire library. (Typically this argument must be quoted,
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.I ``libx.a(foo.o)'',
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to get it past the shell.)
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.PP
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The options to
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.IR strings (1)
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are:
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.TP
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.B \-a
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This option causes
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.I strings
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to look for strings in all sections of the object file (including the
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(\_\^\_TEXT,\_\^\_text) section.
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.TP
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.B \-
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This option causes
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.I strings
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to look for strings in all bytes of the files (the default for non-object files).
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.TP
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.B \-\-
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This option causes
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.I strings
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to treat all the following arguments as files.
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.TP
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.B \-o
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Preceded each string by its offset in the file (in decimal).
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.TP
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.BI \-t " format"
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Write each string preceded by its byte offset from the start of the file.
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The format shall be dependent on the single character used as the format
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option-argument:
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.TP
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.I d
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The offset shall be written in decimal.
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.TP
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.I o
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The offset shall be written in octal.
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.TP
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.I x
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The offset shall be written in hexadecimal.
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.TP
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.BI \- number
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The decimal
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.I number
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is used as the minimum string length rather than the default of 4.
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.TP
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.BI \-n " number"
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Specify the minimum string length, where the number argument is a positive
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decimal integer. The default shall be 4.
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.TP
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.BI \-arch " arch_type"
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Specifies the architecture,
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.I arch_type,
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of the file for
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.IR strings (1)
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to operate on when the file is a universal file. (See
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.IR arch (3)
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for the currently know
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.IR arch_type s.)
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The
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.I arch_type
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can be "all" to operate on all architectures in the file.
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.SH "SEE ALSO"
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od(1)
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.SH BUGS
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The algorithm for identifying strings is extremely primitive.
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