Sun Microsystems, Inc. gratefully acknowledges The Open Group for
permission to reproduce portions of its copyrighted documentation.
Original documentation from The Open Group can be obtained online at
http://www.opengroup.org/bookstore/.
The Institute of Electrical and Electronics Engineers and The Open
Group, have given us permission to reprint portions of their
documentation.
In the following statement, the phrase ``this text'' refers to portions
of the system documentation.
Portions of this text are reprinted and reproduced in electronic form
in the SunOS Reference Manual, from IEEE Std 1003.1, 2004 Edition,
Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6,
Copyright (C) 2001-2004 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy
between these versions and the original IEEE and The Open Group
Standard, the original IEEE and The Open Group Standard is the referee
document. The original Standard can be obtained online at
http://www.opengroup.org/unix/online.html.
This notice shall appear on any product containing this material.
The contents of this file are subject to the terms of the
Common Development and Distribution License (the "License").
You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
or http://www.opensolaris.org/os/licensing.
See the License for the specific language governing permissions
and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each
file and include the License file at usr/src/OPENSOLARIS.LICENSE.
If applicable, add the following below this CDDL HEADER, with the
fields enclosed by brackets "[]" replaced with your own identifying
information: Portions Copyright [yyyy] [name of copyright owner]
Copyright 1989 AT&T
Copyright (c) 1992, X/Open Company Limited. All Rights Reserved.
Portions Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved
strings [-a | -] [-t format | -o] [-n number | -number] [-N name] [file]...
The strings utility looks for ASCII strings in a binary file. A string is any sequence of 4 or more printing characters ending with a NEWLINE or a NULL character.
strings is useful for identifying random object files and many other things.
By default, strings looks at program sections that are loaded in memory. Program sections are identified by the section type SHT_PROGBITS. Sections that are loaded in memory are identified by the section flag SHF_ALLOC. Use elfdump(1) to display complete section information for a file.
All sections can be inspected with the -a option. Individual sections can be inspected with the -N option.
The following options are supported: -a | -
Look everywhere in the file for strings.
Use a number as the minimum string length rather than the default, which is 4.
Look only in ELF section name. See elfdump(1). Multiple -N options can be specified to inspect multiple sections. If the -a or -option is specified, all -N options are ignored .
Equivalent to -t d option.
Write each string preceded by its byte offset from the start of the file. The format is dependent on the single character used as the format option-argument: d
The offset is written in decimal.
The offset is written in octal.
The offset is written in hexadecimal.
The following operand is supported: file
A path name of a regular file to be used as input. If no file operand is specified, the strings utility reads from the standard input.
See environ(5) for descriptions of the following environment variables that affect the execution of strings: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.
The following exit values are returned: 0
Successful completion.
An error occurred.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| CSI Enabled |
| Interface Stability See below. |
The strings utility, including all options except -N, are specified by standards. See standards(5). The -N option is not currently specified by any standard.
elfdump(1), od(1), attributes(5), environ(5), standards(5)
The algorithm for identifying strings is extremely primitive.
For backwards compatibility, the options -a and - are interchangeable.