readelf displays information about one or more ELF format object
files. The options control what particular information to display.
elffile... are the object files to be examined. 32-bit and
64-bit ELF files are supported, as are archives containing ELF files.
This program performs a similar function to objdump but it
goes into more detail and it exists independently of the BFD
library, so if there is a bug in BFD then readelf will not be
The long and short forms of options, shown here as alternatives, are
equivalent. At least one option besides -v or -H must be
Equivalent to specifying --file-header,
--program-headers, --sections, --symbols,
--relocs, --dynamic, --notes and
Displays the information contained in the ELF header at the start of the
Displays the information contained in the file's segment headers, if it
Displays the information contained in the file's section headers, if it
Displays the information contained in the file's section groups, if it
Displays the detailed section information. Implies -S.
Displays the entries in symbol table section of the file, if it has one.
Display all the headers in the file. Equivalent to -h -l -S.
Displays the contents of the NOTE segments and/or sections, if any.
Displays the contents of the file's relocation section, if it has one.
Displays the contents of the file's unwind section, if it has one. Only
the unwind sections for IA64 ELF files are currently supported.
Displays the contents of the file's dynamic section, if it has one.
Displays the contents of the version sections in the file, it they
Displays architecture-specific information in the file, if there
When displaying symbols, this option makes readelf use the
symbol table in the file's dynamic section, rather than the one in the
-x <number or name>
--hex-dump=<number or name>
Displays the contents of the indicated section as a hexadecimal dump.
A number identifies a particular section by index in the section table;
any other string identifies all sections with that name in the object file.
Displays the contents of the debug sections in the file, if any are
present. If one of the optional letters or words follows the switch
then only data found in those specific sections will be dumped.
Display a histogram of bucket list lengths when displaying the contents
of the symbol tables.
Display the version number of readelf.
Don't break output lines to fit into 80 columns. By default
readelf breaks section header and segment listing lines for
64-bit ELF files, so that they fit into 80 columns. This option causes
readelf to print each section header resp. each segment one a
single line, which is far more readable on terminals wider than 80 columns.
Display the command line options understood by readelf.
Read command-line options from file. The options read are
inserted in place of the original @file option. If file
does not exist, or cannot be read, then the option will be treated
literally, and not removed.
Options in file are separated by whitespace. A whitespace
character may be included in an option by surrounding the entire
option in either single or double quotes. Any character (including a
backslash) may be included by prefixing the character to be included
with a backslash. The file may itself contain additional
@file options; any such options will be processed recursively.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1
or any later version published by the Free Software Foundation;
with no Invariant Sections, with no Front-Cover Texts, and with no
Back-Cover Texts. A copy of the license is included in the
section entitled ``GNU Free Documentation License''.