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Mac Network Commands Cheat Sheet

After writing up the presentation for MacSysAdmin in Sweden, I decided to go ahead and throw these into a quick cheat sheet for anyone who’d like to have them all in one place. Good luck out there, and stay salty.

Get an ip address for en0:

ipconfig getifaddr en0

Same thing, but setting and echoing a variable:

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pynetbox examples

Long time network engineer, did some perl a long time ago and am liking python pretty well but the pynetbox documentation is badly lacking IMO. If I were a python wizard I'm sure it would all be obvious but I'm not and it's really frustrating that more example weren't provided.

Many of the following examples were cadged from various places on the interwebs and HAVE NOT BEEN TESTED.

Prereqs

import pynetbox
NETBOX = 'https://netbox.fq.dn/'
nb = pynetbox.api(NETBOX, get_token('nb'))

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Jinja2

if/elif

{% if variable == 'one' %}stuff for one
{% elif variable == 'two' %}stuff for two
{% else %}stuff for anything else
{% endif %}

Ansible

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Bash string manipulation cheatsheet

Assignment
Assign value to variable if variable is not already set. Value will be returned. Couple with : no-op if return value is to be discarded.	${variable="value"} : ${variable="value"}

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"""
Uncipher Cisco type 7 ciphered passwords
Usage: python uncipher.py <pass> where <pass> is the text of the type 7 password

Example:
$ python uncipher.py 094F4F1D1A0403
catcat
"""
import fileinput
import sys

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#!/usr/bin/perl
#
# Update the path to your lease file below
use strict;
use File::Copy;
#use DateTime;

#always parse a copy not the live file
#my $leasefile = '/var/lib/dhcpd/dhcpd.leases';
my $leasefile = '/var/lib/dhcp/db/dhcpd.leases';

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#!/usr/bin/python

""" Ansible Inventory Generated From Netbox

Author: Stanley Karunditu <stanley@linuxsimba.com>

License: MIT

Requirements:
* use netbox device roles that result in hyphenated role names. E.g

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from extras.reports import Report
from dcim.models import Device
from virtualization.models import VirtualMachine
from ipam.constants import *
from ipam.models import IPAddress, Prefix

LOOPBACK_ROLES = [
    IPADDRESS_ROLE_LOOPBACK,
    IPADDRESS_ROLE_ANYCAST,
    IPADDRESS_ROLE_VIP,

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Overview

This is a bash script that will automatically turn your wifi off if you connect your computer to an ethernet connection and turn wifi back on when you unplug your ethernet cable/adapter. If you decide to turn wifi on for whatever reason, it will remember that choice. This was improvised from this mac hint to work with Yosemite, and without hard-coding the adapter names. It's supposed to support growl, but I didn't check that part. I did, however, add OSX notification center support. Feel free to fork and fix any issues you encounter.

Most the credit for these changes go to Dave Holland.

Requirements

• Mac OSX 10+
• Administrator privileges

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