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Maximilian Reichel phramz

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@ixdy
ixdy / yubikey4-ssh-macos.md
Last active September 25, 2025 06:45
Setting up ssh public key authentication on macOS using a YubiKey 4

Setting up ssh public key authentication on macOS using a YubiKey 4

I largely followed Florin's blog post, but have a few notes to add regarding issues I encountered:

Basic setup notes

  1. I used a YubiKey 4, while the blog describes using a YubiKey NEO. I'm sure a YubiKey 5 would also work. I'm also running macOS 10.13.6.
  2. I installed GPGTools as recommended. However, as I'll note later, it seems that gpg-agent only automatically starts when gpg is used; for ssh, you'll need to ensure it's running.
  3. Before generating your keys, decide what key size you want to use. If you run the list command inside gpg --edit-card, look for the Key attributes line to see what is currently selected. On my YubiKey 4, it defaulted to 2048 bits for all keys:
Key attributes ...: rsa2048 rsa2048 rsa2048
@mowings
mowings / client.go
Last active January 27, 2026 17:18
Golang Websocket JSONRPC server and client
package main
import (
"golang.org/x/net/websocket"
"log"
"net/rpc/jsonrpc"
)
// In a real project, these would be defined in a common file
type Args struct {
@frastel
frastel / build-lock.xml
Created February 20, 2013 09:42
Ant target for executing composer.lock vulnerability check provided by SensioLabs https://security.sensiolabs.org without using the CLI command. The command "ant lock_check" will do everything you need for this check. The definition assumes existing folder structure from http://jenkins-php.org/, you may want to modify those paths.
<?xml version="1.0" encoding="UTF-8"?>
<project name="Project-name-here" default="build" basedir=".">
<target name="lock_check" description="Checks for vulnerabilities through a SensioLabs web service"
depends="lock_reset,lock_get,lock_show">
<local name="vulnerabilities.clean"/>
<loadfile property="vulnerabilities.clean"
srcfile="${basedir}/build/logs/check_lock.log">
<filterchain>
@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active April 15, 2026 17:04
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'