Notice: This repository is not to be considered dead, but finished.
This is a set of small commands I am making to learn x86_64 assembly for Linux. I want all of these to be as small as possible, meaning there are very few features, unlike GNU Coreutils, for example.
The only packages you need are make and nasm.
Alternatively, you can run nix build to build the programs.
There is an experimental x32 port of the binaries in the x32/ directory.
You will probably need some kernel flags set to get it to run without errors.
- cat
- takes up 206 bytes
- mkdir, rmdir, touch, rm
- rm and rmdir take up 141 bytes, while touch and mkdir take up 146 bytes
- all based on the same piece of code at
mkrmdirfile/base.asm
- yes
- takes up 158 bytes
- The string printed is comprised of the first argument, so you should put everything you want to print in quotes
- clear
- takes up 133 bytes
- Has 3 less options than the ncurses version, but I don't think anyone should need them.
- true
- takes up 114 bytes
- Cannot be reduced even further without a change to the ELF header, or to the kernel
- false
- takes up 114 bytes
- Same problem as true
The W^X protection of some processors and/or operating systems may cause some programs, like cat, to not run at all. I will not attempt to accomodate for this because my it works on my machine. I will not accept pull requests to appease those computers unless the programs are smaller afterward.
If you need support, or just want to say something, you can contact me via clevor@EFNet.