scanelf [options] ELFs or directories

       scanelf is a user-space utility to quickly scan given ELFs,
       directories, or common system paths for different information. This may
       include ELF types, their PaX markings, TEXTRELs, etc...

       -A, --archives
           Scan archives (.a files)

       -a, --all
           Print all useful/simple info

       -B, --nobanner
           Don't display the header

       -b, --bind
           Print symbol binding information (lazy or now)

       -D, --endian
           Print ELF endianness (big/little/...)

       -E, --etype ETYPE
           Print only ELF files matching specified etype (like ET_DYN,
           ET_EXEC, etc...)

       -e, --header
           Print GNU_STACK markings

       -F, --format FORMAT
           Use specified format for output; see the FORMAT section for more

       -f, --from FILE
           Read input stream from specified filename

       -g, --gmatch
           Use strncmp to match libraries (use with -N). Or regexp with symbol

       -h, --help
           Show condensed usage and exit

       -I, --osabi
           Print OSABI

       -i, --interp
           Print the interpreter information (.interp/PT_INTERP)

       -k, --section SECTION
           Find ELFs with the specified section

       -N, --lib SONAME
           Find ELFs that need the specified SONAME

       -n, --needed
           Print libraries the ELF is linked against (DT_NEEDED)

       -O, --perms PERMS
           Print only ELF files with matching specified octal bits (like 755)

       -o, --file FILE
           Write output stream to specified filename

       -p, --path
           Scan all directories in PATH environment

       -q, --quiet
           Only output 'bad' things

       -R, --recursive
           Scan directories recursively

       -r, --rpath
           Print runpaths encoded in the ELF (DT_RPATH/DT_RUNPATH)

       -S, --soname
           Print the ELF's shared library name (DT_SONAME)

       -s, --symbol SYMBOL
           Find the specified symbol; see SYMBOL MATCHING for more info

       -T, --textrels
           Locate cause of TEXTRELs via objdump

       -t, --textrel
           Print TEXTREL information

       -V, --version
           Print version and exit

       -v, --verbose
           Be verbose (can be used more than once)

       -X, --fix
           Try and 'fix' bad things (use with -r/-e)

       -x, --pax
           Print PaX markings

       -Y, --eabi
           Print EABI (only matters for a few architectures)

       -y, --symlink
           Don't scan symlinks
             # scanelf -BF "file %f needs %n; funky time" /bin/bash
             file bash needs,,; funky time

       Note that when you use a format string, generally information related
       flags should be omitted. In other words, you do not want to try and
       request NEEDED output (-n) and try to specify a format output at the
       sametime as these operations are mutually exclusive. Each information
       related flag has an equivalent conversion specifier, so use those
       instead. You can of course continue to use non-information related
       flags (such as --verbose).

       There are three characters that introduce conversion specifiers.

       o % - replace with info
       o # - silent boolean match
       o + - verbose match

       And there are a number of conversion specifiers. We try to match up the
       specifier with corresponding option.

       o a - machine (EM) type
       o b - bind flags
       o e - program headers
       o D - endian
       o I - osabi
       o Y - eabi
       o F - long filename
       o f - short filename
       o i - interp
       o k - section
       o M - EI class
       o N - specified needed
       o n - needed libraries
       o p - filename (minus search)
       o o - etype
       o O - perms
       o r - runpaths
       o S - SONAME
       o s - symbol
       o T - all textrels
       o t - textrel status
       o x - pax flags

       A - prefix will only show undefined references while a + prefix will
       only show defined references while no prefix will show both.

       You can narrow your search by specifying the ELF object file type
       (ETYPE). The commandline option takes the numeric value and or symbolic
       type. Multiple values can be passed comma separated. Example -E
       You can also narrow your search by specifying the ELF bitsize. Again,
       specify the numeric value or the symbolic define.

       o 32 - ELFCLASS32 - 32bit ELFs
       o 64 - ELFCLASS64 - 64bit ELFs


       Please include as much information as possible (using any available
       debugging options) and send bug reports to the maintainers (see the
       AUTHORS section). Please use the Gentoo bugzilla at if possible.

       chpax(1), dumpelf(1), paxctl(1), pspax(1), readelf(1), scanelf(1)

       Ned Ludd <>

       Mike Frysinger <>

       Fabian Groffen <>
           Mach-O Maintainer



pax-utils 0.2.3                   03/03/2011                        SCANELF(1)
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