41

Source code:

#!/usr/bin/env bash

# runasm - Assemble, link, and run multiple assembly files, then delete them.
if [[ $# -eq 0 ]]; then
    echo "Usage: runasm  [ ...]"
    echo "  - Assemble, link, and run multiple assembly files, then delete them."
    echo "  - Name of executable is the name of the first file without extension."
    exit 1
fi

object_files=()
executable_file=${1%.*}

for assembly_file in "$@"; do
    # Avengers, assemble!
    object_file="${assembly_file%.*}.o"
    as "${assembly_file}" -o "${object_file}"
    if [[ $? -ne 0 ]]; then
        exit 1
    fi
    object_files+=("${object_file}")
done

# Link
ld "${object_files[@]}" -o "${executable_file}"
if [[ $? -ne 0 ]]; then
    exit 1
fi

# Run, remove created files, and return exit code
./"${executable_file}"
exit_code=$?
rm "${object_files[@]}" "${executable_file}" > /dev/null 2>&1
exit "${exit_code}"
top 10 comments
sorted by: hot top controversial new old
[-] jsdz@lemmy.ml 56 points 1 year ago

I have two reactions: 1. The headline is rather silly. 2. There's no way this little script, although it might conceivably be useful to someone, needs to be a youtube video.

[-] Poe@lemmy.world 22 points 1 year ago

Isn't the whole point of assembly that there is no compiler?

[-] SpaceNoodle@lemmy.world 18 points 1 year ago

Right, they just use an assembler and a linker ...

[-] stardreamer@lemmy.blahaj.zone 6 points 1 year ago

I mean they're not wrong...

This is why my next book will be titled "how to cook dinner without a compiler, GCC 4 to GCC 11 compatible!"

[-] sir_reginald@lemmy.world 16 points 1 year ago

I was going to click on this until I saw it was a video.

[-] spaghetti_carbanana@krabb.org 4 points 1 year ago

I need this on a t-shirt

[-] OmnipotentEntity@beehaw.org 6 points 1 year ago

Putting aside the misleading title...

Because this writes to and then runs an executable file with a known name, this script should never be used on a multiuser system in a directory where another user has write permissions. It is vulnerable to a timing attack where the attacker copies an executable they want run with your permissions between this script creating the file and running it.

[-] otl@lemmy.sdf.org 3 points 1 year ago

I'm still super confused by this user's posts lol. I get that (some? most?) of it is satire... but then why all social media engagement farming hashtag nonsense? Or is this all part of the satire...?

[-] RastislavKish@lemmy.ml 1 points 1 year ago

Perhaps we should reconsider the definition of write-only scripts.

[-] PipedLinkBot@feddit.rocks 1 points 1 year ago

Here is an alternative Piped link(s):

https://piped.video/watch?v=kNKuRdoaNII

Source code:

Piped is a privacy-respecting open-source alternative frontend to YouTube.

I'm open-source; check me out at GitHub.

this post was submitted on 29 Oct 2023
41 points (78.9% liked)

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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