my website’s backend is made with bash, it calls make for every request and it probably has hundreds of remote arbitrary code execution bugs that will get me pwned someday, it’s great
edit: to clarify, it uses a rust program i made to expose the bash scripts as http endpoints, i’m not crazy enough to implement http in bash
it behaves like a static file server, but if a file has the others-execute permission bit set it executes the file instead of reading it
it’s surprisingly nice for prototyping since you can just write a cli program and it’s automatically available over http too
who hurt you?
i thought it was neat how php lets you write your website’s logic with the same directory tree pattern that clients consume it from, but i didn’t want to learn php so i made my own, worse version
- bdonvr ( @bdonvr@thelemmy.club ) 36•1 year ago
I designed a chip architecture that runs bash code on silicon.
I reimplemented x86 assembly in purely bash script.
Set -e, please for the love of god, set -e
you do realize that you can just use Apache instead of writing your own rust program for this, as this is more or less the CGI standard?
I know about the CGI standard, but mine does things a little differently (executable files don’t just render pages but also handle logging, access control, etc. when put in special positions within a directory), so I still think it was worth the afternoon i spent making it.
Yeah, especially if you did this for practice.
Just saying, that apache, for big projects, is more battle-hardened. ;-)
Oh yeah definitely, Apache is way better for anything remotely serious.
lord forgive me for I have sinned.
Before nginx was a thing, I worked with a guy who forked apache httpd and wrote this blog in C, like, literally embedded html and css inside the server, so when he made a tpyo or was adding another post he had to recompile the source code. The performance was out of this world.
There are a lot of solutions like that in rust. You basically compile the template into your code.
yeah, templates can be parsed at compile time but these frameworks are not embeeding whole fucking prerendered static pages/assets
They are nowadays. Compiling assets and static data into rust and deliver virtual DOM via websocket to the browser is the new cool kid in the corner.
Have a look at dioxus
Compiling all assets into the binary is trivial in rust. When I have a small web server that generates everything in code I usually compile the favicon into the binary.
This reminds me of one of my older projects. I wanted to learn more about network communications, so I started working on a simple P2P chat app. It wasn’t anything fancy, but I really enjoyed working on it. One challenge I faced was that, at the time, I didn’t know how to listen for user input while handling network communication simultaneously. So, after I had managed to get multiple TCP sockets working on one thread, I thought, why not open another socket for HTTP communication? That way, I could incorporate a fancy web UI instead of just a CLI interface.
So, I wrote a simple HTTP server, which, in hindsight, might not have been necessary.
Ah, you met fefe.
Fefe uses a LDAP server as backend, not Apache
He also uses his own http server that in turn queries the ldap server solely for the articles. The rest is compiled into the http server binary.
He uses his own http server called gatling and an LDAP server instead of a database.
Just don’t call it with
#!/bin/sh. Because that’s POSIX shell, not bash.but effectively it’s bash, I think
/bin/shis a symlink to bash on every system I know of…Edit: I feel corrected, thanks for the information, all the systems I used, had a symlink to bash. Also it was not intended to recommend using bash functionality when having a shebang
!#/bin/sh. As someone other pointed out, recommendation would be#!/usr/bin/env bash, or!#/bin/shif you know that you’re not using bash specific functionality.Still don’t do this. If you use bash specific syntax with this head, that’s a bashism and causes issues with people using zsh for example. Or with Debian/*buntu, who use dash as init shell.
Just use
#!/bin/bashor#!/usr/bin/env bashif you’re funny.#!/bin/bashdoesn’t work on NixOS since bash is in the nix store somewhere,#!/usr/bin/env bashresolves the correct location regardless of where bash is
Are there any distos with
/usr/bin/envin a different spot? I still believe that’s the best approach for getting bash.All posix-compliant distros need /usr/bin/env
I do think a simple symlink is superior to a tool parsing stuff. A shame POSIX choose this approach.
Still the issue that a posix shell can be on a non-posix system and vice versa. And certificates versus used practice. Btw, isn’t there only one posix certified Linux distro? Was it Suse?
Posix certification is dumb but posix compliance is nice to ensure some level of compatibility.
Symlinks would be pretty bad in the case of nixos. Wouldn’t fit at all
My own. I use arch btw
/bin/bashwon’t work on every system for example NixOS some other systems may have bash in /usr/bin or elsewhereNixOS didn’t do /usr merge?
Binaries are not in
/usr/binor/binexcept for/bin/shand/usr/bin/env. Programs should not assume fixed paths for binaries and instead look for them in$PATH.
No no no no no, do not believe this you will shoot yourself in the foot.
Beginning with DebianSqueeze, Debian uses Dash as the target of the /bin/sh symlink. Dash lacks many of the features one would expect in an interactive shell, making it faster and more memory efficient than Bash.
From DebianSqueeze to DebianBullseye, it was possible to select bash as the target of the /bin/sh symlink (by running dpkg-reconfigure dash). As of DebianBookworm, this is no longer supported.
It is a symlink, but bash will automatically enable posix compliance mode if you use it. So any bash specific features will bomb out unless you explicitly reset it in the script.
i thought most unix-like systems had it symlinked to a shell like
dash. it’s what i have on my system (void linux), of course not as an interactive shell loli use
#!/bin/shfor posix scripts and#!/usr/bin/env bashfor bash scripts.#!/bin/shworks for posix scripts since even if it’s symlinked to bash, bash still supports posix features.
macOS
Debian
Ubuntu
All you need are Bash scripts with chroot and cgroups and some ssh access.
99% and maybe even 100%
The dude on the right is some neckbeard who yells “RTFM” and “i use Arch btw ;)” IRL.
i feel this
wow
d