ELFEDIT(1)

📦
version 2.40.50~ti1ubuntu1 · 2 versions
, in ubuntu noble

💖 ELFEDIT(1) 💖

okay bestie, welcome to the GNU Development Tools corner of the group chat, where we're talking about elfedit — yes the whole manual page, yes we're doing this, and yes you're gonna understand it. pull up a chair, grab a boba, it's giving ✨main character energy✨ for your ELF files.

✨ NAME ✨

elfedit — update ELF header and program property of ELF files

like, it edits ELF files. the header and the program property parts specifically. that's the whole gig. slay. 💅

🌸 SYNOPSIS 🌸

elfedit [--input-mach=machine]
        [--input-type=type]
        [--input-osabi=osabi]
        [--input-abiversion=version]
        --output-mach=machine
        --output-type=type
        --output-osabi=osabi
        --output-abiversion=version
        --enable-x86-feature=feature
        --disable-x86-feature=feature
        [-v|--version]
        [-h|--help]
        elffile...

look at her. structured. organized. a queen. 👑

🦋 DESCRIPTION 🦋

so, elfedit updates the ELF header and program property of ELF files — but ONLY the ones that have the matching ELF machine and file types. like, it's picky, and honestly? respect. 🫶

the options control how and which fields in the ELF header and program property should be updated. that's the vibe.

elffile... are the ELF files to be updated. 32-bit and 64-bit ELF files are supported, and so are archives containing ELF files. no cap. 🌈

🎀 OPTIONS 🎀

the long and short forms of options, shown here as alternatives, are equivalent — so don't come for me about it. and listen:

at least one of the --output-mach, --output-type, --output-osabi, --output-abiversion, --enable-x86-feature and --disable-x86-feature options must be given. this is not optional, bestie. it's the rule. 😭
  • --input-mach=machine — sets the matching input ELF machine type to machine. if you don't pass --input-mach, it'll just match any ELF machine types. (chill of it, honestly 💅) the supported ELF machine types are i386, IAMCU, L1OM, K1OM and x86-64.
  • --output-mach=machine — changes the ELF machine type in the ELF header to machine. the supported ELF machine types are the same as --input-mach. 🔥
  • --input-type=type — sets the matching input ELF file type to type. if --input-type isn't specified, it will match any ELF file types. the supported ELF file types are rel, exec and dyn.
  • --output-type=type — changes the ELF file type in the ELF header to type. the supported ELF types are the same as --input-type.
  • --input-osabi=osabi — sets the matching input ELF file OSABI to osabi. if --input-osabi isn't specified, it will match any ELF OSABIs. the supported ELF OSABIs are none, HPUX, NetBSD, GNU, Linux (alias for GNU), Solaris, AIX, Irix, FreeBSD, TRU64, Modesto, OpenBSD, OpenVMS, NSK, AROS and FenixOS. it's a whole roster and every one of them ate. 🌟
  • --output-osabi=osabi — changes the ELF OSABI in the ELF header to osabi. the supported ELF OSABI are the same as --input-osabi.
  • --input-abiversion=version — sets the matching input ELF file ABIVERSION to version. version must be between 0 and 255. if --input-abiversion isn't specified, it will match any ELF ABIVERSIONs.
  • --output-abiversion=version — changes the ELF ABIVERSION in the ELF header to version. version must be between 0 and 255.
  • --enable-x86-feature=feature — sets the feature bit in program property in exec or dyn ELF files with machine types of i386 or x86-64. the supported features are ibt, shstk, lam_u48 and lam_u57. ✨
  • --disable-x86-feature=feature — clears the feature bit in program property in exec or dyn ELF files with machine types of i386 or x86-64. the supported features are the same as --enable-x86-feature.
note bestie: --enable-x86-feature and --disable-x86-feature are available only on hosts with mmap support. no mmap, no feature bits, i don't make the rules. 💀
  • -v, --version — displays the version number of elfedit. cute, quick, iconic.
  • -h, --help — displays the command-line options understood by elfedit. when in doubt, ask the queen herself. 🙈
  • @file — reads 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. (it just stays there. unmoved. unbothered. 💅) 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. yes, it's turtles all the way down, and yes, that's lowkey iconic. 🐢✨

🌈 SEE ALSO 🌈

go read those too, bestie, they're part of the lore. 📚

Copyright (c) 1991-2023 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 1.3 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".

like, legally iconic. 📜

and that's the whole page, bestie!! this was elfedit, from binutils-2.40.50, dated 2023-07-04 — go forth and edit those ELF headers responsibly, mwah 💋✨🦋

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