papamoose

#!/usr/bin/env python3
#
# NOTE: This assumes that all modules and versions are built for at
#       least one kernel. If that's not the case, adapt parsing as needed.
import os
import subprocess

# Permission check.
if os.geteuid() != 0:
  print("You need to be root to run this script.")

papamoose

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

papamoose

dmesg output when plugging in the usb serial cable:

[161312.500002] usb 3-2: new full-speed USB device number 3 using xhci_hcd
[161312.926854] usb 3-2: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00
[161312.926860] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[161312.926863] usb 3-2: Product: FT232R USB UART
[161312.926866] usb 3-2: Manufacturer: FTDI
[161312.926869] usb 3-2: SerialNumber: AC01PV6Q
[161312.966524] usbcore: registered new interface driver usbserial_generic
[161312.966534] usbserial: USB Serial support registered for generic

papamoose

#!/usr/bin/python

# For mojave only
# In order for this to work, you will need to go to System Preferences in Mojave -> Security & Privacy -> Privacy -> Full Disk Access and grant Terminal.app permissions

import sqlite3
conn = sqlite3.connect('/var/db/SystemPolicyConfiguration/KextPolicy')
c = conn.cursor()
query = 'SELECT * FROM kext_policy'
c.execute(query)

papamoose

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

papamoose

#install gcc git build-essential python3
$ sudo aptitude install gcc git build-essential python3

#from http://www.pip-installer.org/en/latest/installing.html
$ curl -O https://raw.github.com/pypa/virtualenv/master/virtualenv.py

$ mkdir python3_prole
$ cd python3_prole/
$ python virtualenv.py -p /usr/bin/python3 env
$ python virtualenv.py --relocatable -p /usr/bin/python3 env

papamoose

#!/usr/bin/env python

"""
Python functions for finding open files and PIDs that have opened a file.
"""

import numbers
import subprocess

try:

papamoose

Howto start using Letsencrypt with simp_le

What I had:

• A Debian server at "mydomain.fi"
• A self-signed certificate for Apache HTTPD, Postfix SMTPD and Dovecot IMAPD.

What I wanted:

• A Letsencrypt certificate for Apache, Postfix and Dovecot
• Simple tool for managing certificates that does need root privileges
• Automatic renewal

papamoose

1) see re: increasing shmmax http://stackoverflow.com/a/10629164/1283020

2) add to postgresql.conf:
shared_preload_libraries = 'pg_stat_statements'   # (change requires restart)
136 pg_stat_statements.max = 1000
137 pg_stat_statements.track = all

3) restart postgres

4) check it out in psql

papamoose

Using Git

Global Settings

Related Setup: https://gist.github.com/hofmannsven/6814278

Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/