jftuga

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jftuga

📦 npm + npx Cheat Sheet

A quick reference for common npm and npx commands.

---

🔍 Checking Versions

npm -v          # Show npm version
node -v # Show Node.js version

jftuga

/*
 * A C implementation that mimics Perl's 'chomp' functionality.
 * Reads from standard input and outputs all characters except the trailing newline.
 * Preserves internal newlines but removes only the final newline if present.
 * Compile with: gcc -O2 -o chomp chomp.c
 */

#include <stdio.h>

int main(void) {

jftuga

whisper.cpp on MacOS

Reference: https://github.com/ggml-org/whisper.cpp/blob/master/README.md

Shell

In .zshrc, add:

export DYLD_LIBRARY_PATH="/usr/local/lib:${DYLD_LIBRARY_PATH}"

jftuga

#!/bin/bash
# https-server
# 2025-04-30
#
# This script starts a one-off HTTPS server using OpenSSL.
# It generates a temporary self-signed SSL certificate and private key,
# then uses OpenSSL's s_server command to serve files from the current directory
# over an encrypted HTTPS connection on port 4443.
#
# The script also handles cleanup:

jftuga

# python logging for AWS Lambda function

import logging

# boto3 internally uses DEBUG and INFO; therefore start with WARNING level
logging.basicConfig(level=logging.WARNING)

def lambda_handler(event, context):
  logging.warning(f"{event=}")

jftuga

Open SingleFile extension preferences...

For the File Name field use this:

SingleFile/%if-empty<%replace<{page-title}| |_>|no_title>--{year-locale}{month-locale}{day-locale}.{hours-locale}{minutes-locale}{seconds-locale}.{filename-extension}

Example file (uses local time):

jftuga

# to be placed in .zshrc or .bashrc on MacOS

function batt-info() {
    echo
    system_profiler SPPowerDataType | grep Wattage | cut -c 7-
    echo
    pmset -g batt
}

jftuga

Line Insertion Utility

This Python utility provides two functions for inserting lines into configuration files:

• insert_lines
• regex_insert_lines

These functions allow for precise and flexible modification of text files, particularly useful for updating configuration files in networking and system administration tasks.

• insert_lines: Inserts specified lines into a file before or after a line that starts with a given string.

jftuga

Inspired by: Add Git Branch Name to Terminal Prompt

I have a two line zsh prompt:

• line 1: current-directory [git branch]
• line 2: hostname HH:MM:SS $

In my .zshrc file: