READELF linux command manual

READELF(1)                  GNU Development Tools                  READELF(1)



NAME
       readelf - Displays information about ELF files.

SYNOPSIS
       readelf [-a|--all]
               [-h|--file-header]
               [-l|--program-headers|--segments]
               [-S|--section-headers|--sections]
               [-e|--headers]
               [-s|--syms|--symbols]
               [-n|--notes]
               [-r|--relocs]
               [-u|--unwind]
               [-d|--dynamic]
               [-V|--version-info]
               [-A|--arch-specific]
               [-D|--use-dynamic]
               [-x |--hex-dump=]
               [-w[liaprmfFso]|
                --debug-dump[=line,=info,=abbrev,=pub-
       names,=ranges,=macro,=frames,=frames-interp,=str,=loc]]
               [-I|-histogram]
               [-v|--version]
               [-W|--wide]
               [-H|--help]
               elffile...

DESCRIPTION
       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 affected.

OPTIONS
       The long and short forms of options, shown here as  alternatives,  are
       equivalent.  At least one option besides -v or -H must be given.

       -a
       --all
           Equivalent to specifiying --file-header, --program-headers, --sec-
           tions, --symbols, --relocs, --dynamic, --notes and --version-info.

       -h
       --file-header
           Displays  the information contained in the ELF header at the start
           of the file.

       -l
       --program-headers
       --segments
           Displays the information contained in the file's segment  headers,
           if it has any.

       -S
       --sections
       --section-headers
           Displays  the information contained in the file's section headers,
           if it has any.

       -s
       --symbols
       --syms
           Displays the entries in symbol table section of the  file,  if  it
           has one.

       -e
       --headers
           Display all the headers in the file.  Equivalent to -h -l -S.

       -n
       --notes
           Displays the contents of the NOTE segment, if it exists.

       -r
       --relocs
           Displays  the contents of the file's relocation section, if it has
           one.

       -u
       --unwind
           Displays the contents of the file's unwind section, if it has one.
           Only  the  unwind  sections  for IA64 ELF files are currently sup-
           ported.

       -u
       --unwind
           Displays the contents of the file's unwind section, if it has one.
           Only  the  unwind  sections  for IA64 ELF files are currently sup-
           ported.

       -d
       --dynamic
           Displays the contents of the file's dynamic  section,  if  it  has
           one.

       -V
       --version-info
           Displays the contents of the version sections in the file, it they
           exist.

       -A
       --arch-specific
           Displays architecture-specific information in the file,  if  there
           is any.

       -D
       --use-dynamic
           When  displaying symbols, this option makes readelf use the symbol
           table in the file's dynamic section, rather than the  one  in  the
           symbols section.

       -x 
       --hex-dump=
           Displays  the  contents  of the indicated section as a hexadecimal
           dump.

       -w[liaprmfFso]
       --debug-dump[=line,=info,=abbrev,=pub-
       names,=ranges,=macro,=frames,=frames-interp,=str,=loc]
           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.

       -I
       --histogram
           Display  a  histogram  of  bucket list lengths when displaying the
           contents of the symbol tables.

       -v
       --version
           Display the version number of readelf.

       -W
       --wide
           Don't break output lines to fit into 80 columns. By default  read-
           elf breaks section header and segment listing lines for 64-bit ELF
           files, so that they fit into 80 columns. This option causes  read-
           elf  to  print each section header resp. each segment one a single
           line, which is far  more  readable  on  terminals  wider  than  80
           columns.

       -H
       --help
           Display the command line options understood by readelf.

SEE ALSO
       objdump(1), and the Info entries for binutils.

COPYRIGHT
       Copyright  (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
       2003 Free Software Foundation, Inc.

       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''.



binutils-2.15.90.0.3              2004-05-04                       READELF(1)