Serghei Iakovlev sergeyklay

Journalctl Cheat Sheet

Configuration

Permissions

To see messages from other users and the system as well as performing various log operations from a regular user add it to the group:

sudo usermod -aG systemd-journal $USER

Happy PHP Debugging

Usage

gdb --args /usr/bin/php script.php

(gdb) source ~/src/php/7.2.1/.gdbinit

GPG: Import and export instructions

Every so often I have to restore my gpg keys and I'm never sure how best to do it. So, I've spent some time playing around with the various ways to export/import (backup/restore) keys.

Export keys and ownertrust

gpg --export --armor 1E0B5331219BEA88 > 1E0B5331219BEA88.pub.asc
gpg --export-secret-keys --armor 1E0B5331219BEA88 > 1E0B5331219BEA88.priv.asc
gpg --export-secret-subkeys --armor 1E0B5331219BEA88 > 1E0B5331219BEA88.sub_priv.asc

gpg --export-ownertrust > ownertrust.txt

	#!/bin/bash
	# bash generate random alphanumeric string
	#

	# bash generate random 32 character alphanumeric string (upper and lowercase) and
	NEW_UUID=$(cat /dev/urandom \| tr -dc 'a-zA-Z0-9' \| fold -w 32 \| head -n 1)

	# bash generate random 32 character alphanumeric string (lowercase only)
	cat /dev/urandom \| tr -dc 'a-zA-Z0-9' \| fold -w 32 \| head -n 1

	[Unit]
	Description=My service

	[Service]
	ExecStart=/usr/local/bin/my-service \
	-argument value \
	-otherargument othervalue

	# Setuid/Setgid
	User=nobody

	(defn- normalize-verison
	[version]
	(let [[x y z] (map read-string (clojure.string/split version #"\."))
	z (or z 0)]
	(+ (* x 10000) (* y 100) z)))

	(defn version-compare
	[a b]
	(let [left (normalize-verison a)
	right (normalize-verison b)]

	$ telnet-ssl -z ssl imap.gmail.com 993
	Trying 173.194.222.109...
	Connected to gmail-imap.l.google.com.
	Escape character is '^]'.
	* OK Gimap ready for requests from 193.201.216.169 z8mb75199760ljk
	a1 LOGIN [email protected] my-password-here
	* CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE ENABLE MOVE CONDSTORE ESEARCH UTF8=ACCEPT LIST-EXTENDED LIST-STATUS LITERAL- SPECIAL-USE APPENDLIMIT=35651584
	a1 OK [email protected] authenticated (Success)
	a2 LIST "" "*"
	* LIST (\HasNoChildren) "/" "INBOX"

	package main

	import (
	"fmt"
	"golang.org/x/net/context"
	cc "golang.org/x/oauth2/clientcredentials"
	"io/ioutil"
	"net/http"
	"os"
	)

	(require 'json)

	(defvar owm/base-api-url "api.openweathermap.org")
	(defvar owm/base-api-ver 2.5)
	(defvar owm/api-key "PUT_API_KEY_HERE")

	(defvar owm/default-scheme "https")

	(defun owm/build-url (appid lat lon lang units)
	(let* ((local (format "data/%s/weather" owm/base-api-ver))

	;;; Directory Local Variables
	;; For more information see (info "(emacs) Directory Variables")

	((nil . ((indent-tabs-mode . t)
	(fill-column . 80)))
	(c-mode . ((c-file-style . "k&r")
	(tab-width . 4)
	(c-basic-offset . 4)
	(flycheck-checker . c/c++-gcc)
	(flycheck-disabled-checkers c/c++-clang)