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sudo openconnect -u timid --passwd-on-stdin --authgroup 'RWTH-VPN (Split Tunnel)' vpn.rwth-aachen.de

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const std = @import("std");
const process = std.process;
const mem = std.mem;

const usage: []const u8 =
    \\Usage: executable_name [options]
    \\
    \\  -h            Print this help message and exit.
    \\  -c <command>  Run `sh -c <command>` on startup.
    \\

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entry points: main.zig -> main() -> buildOutputType() -> Compilation.create()

Main steps how assembly is generated
1. lib/std/zig/tokenizer.zig -> Token (same file)
2. lib/std/zig/parse.zig -> AST (lib/std/zig/ast.zig)
3. src/AstGen.zig -> Zir (src/Zir.zig)
4. src/Sema.zig -> Air (src/Air.zig)
5. src/codegen.zig -> LLVM/C backend/etc

Future plan

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/****************************************************************************/
/*                                                                          */
/*  The FreeType project -- a free and portable quality TrueType renderer.  */
/*                                                                          */
/*  Copyright (C) 1996-2021 by                                              */
/*  D. Turner, R.Wilhelm, and W. Lemberg                                    */
/*                                                                          */
/*                                                                          */
/*  ftstring.c - simple text string display                                 */
/*                                                                          */

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const std = @import("std");
const maxInt = std.math.maxInt;
const print = std.debug.print;

test "custom number system print ctz" {
    //var in: u64 = 0;
    var in: u32 = 256;
    //var in: u64 = 256;
    //var in: u128 = 256;
    var x: @TypeOf(in) = 0;

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const std = @import("std");
const maxInt = std.math.maxInt;
const print = std.debug.print;

test "print ffs" {
    //var in: u64 = 0;
    //var in: u32 = 256;
    //var in: u64 = 256;
    var in: u128 = 256;
    var x: @TypeOf(in) = 0;

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#comparison

This in an article about what I think what different C-family languages can be semantically distinguished in how they approach programming and what the effects on the most important categories in system programming (highest performance and reliability demands) are.

Nongoal: Looking into language philosophies and origins for design decisions, because they are very deep rabbit holes (even for single languages).

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#!/bin/bash
#quick backup script to mess with nvim config

## backup all files except those defined in ExcludeArray
## NOTE: files in list will not be touched
## other (newly created/renamed) files are deleted before restoring

#safer defaults https://bertvv.github.io/cheat-sheets/Bash.html
set -o errexit   # abort on nonzero exitstatus
set -o nounset   # abort on unbound variable

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#!/usr/bin/env bash
#quick backup script to mess with nvim config

## backup all files except those defined in ExcludeArray
## files in ExcludeArray will not be touched
## all other files in nvim config are deleted before restoring

## USAGE: 1. in $NVIM_PATH:                   bash backup.sh
##        2. in $NVIM_PATH/$BACKUP_FOLDER:    bash restore.sh

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Incomplete list of safety shortcomings in POSIX shell

NEVER leave your variables unquoted.
https://unix.stackexchange.com/questions/171346/security-implications-of-forgetting-to-quote-a-variable-in-bash-posix-shells
And variables with common prefixes without braces.
https://stackoverflow.com/questions/8748831/when-do-we-need-curly-braces-around-shell-variables
Always clean up your environment to prevent stack smashing.
https://github.com/netblue30/firejail/issues/3678

Better use `test [expression]` and dont dare to ask why