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# https://github.com/trezor/trezor-firmware/blob/master/tests/fido_tests/libfido2/hmac-secret.sh

# DEVICE=$(fido2-token -L | cut -d : -f 1)
DEVICE=$(fido2-token -L | cut -d : -f 1-2)

if [ -z "$DEVICE" ] ; then
  echo "No FIDO2 token found"
  exit 1
fi

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# show all
codesign -dv -vvvvvv my.app
# print entitlements
codesign --display --entitlements :- my.app
# get certificates
codesign --display --extract-certificates my.app

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#!/bin/bash
set -euxo pipefail

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// g++ x11-print-layout.cpp -lX11 -o x11-print-layout
// dumps keybaord layout on x11

#include <X11/XKBlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include <iostream>

Display *display;

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const started = process.hrtime();

// something

const elapsed = process.hrtime(started);
const elapsedMs = Math.round(elapsed[0] * 1e3 + elapsed[1] / 1e6);
console.log(`Elapsed ${elapsedMs} ms`);

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# encrypt file.txt to file.enc using 256-bit AES in CBC mode
openssl enc -aes-256-cbc -salt -in file.txt -out file.enc

# the same, only the output is base64 encoded for, e.g., e-mail
openssl enc -aes-256-cbc -a -salt -in file.txt -out file.enc

# decrypt binary file.enc
openssl enc -d -aes-256-cbc -in file.enc -out file.txt

# decrypt base64-encoded version

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sudo killall -HUP mDNSResponder

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# 42 = desired disk size in megabytes
diskutil erasevolume HFS+ 'RAM Disk' `hdiutil attach -nomount ram://$((42*2048))`

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const http = require('http');
const path = require('path');
const fs = require('fs');

const port = 8080;

const server = http.createServer((req, resp) => {
    const filePathPart = req.url.substr(1) || 'index.html';
    const filePath = path.resolve(__dirname, filePathPart);
    if (!filePath.startsWith(__dirname)) {

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function escape(str) {
    return str.replace(/[\n\r\\\'\u2028\u2029]/g, ch => {
        if (ch === '\n') { return '\\n'; }
        else if (ch === '\r') { return '\\r'; }
        else if (ch === '\\') { return '\\\\'; }
        else if (ch === '\'') { return '\\\''; }
        else if (ch === '\u2028') { return '\\u2028'; }
        else if (ch === '\u2029') { return '\\u2029'; }
        else throw 'Bad char';
    });