Kyle Kowalczyk

Kyle Kowalczyk

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Home2017May

Month: May 2017

Cisco

Cisco 3750x – Stuck in Boot Loop – Access Switch Prompt

May 24, 2017 kyle@smallguysit.com 0

If you have ever uploaded an image to a switch that is not supported by that hardware you will be all too familiar with this. Keep in mind these instructions are written for a Cisco […]

Linux

Linux Server – Configure IP tables Firewall

May 17, 2017 kyle@smallguysit.com 0

In this post I will be showing how to configure an IP tables firewall on a Ubuntu Linux server. At first glance configuring iptables seems cryptic and complex but once you analyze the commands and […]

Python

Python – Check if a File Exists

May 10, 2017 kyle@smallguysit.com 0

If you need your script to check if a file exists, for example before attempting to create one, it is relatively straight forward and easy to do so using the ‘os’ module. Below is a […]

Python

Python – Locate Path of Python Script Within Script

May 5, 2017 kyle@smallguysit.com 0

When running a python script it is many times beneficial to know where on the system the python file you are running is located, for instance if you have files in the same directory as […]

Cisco

Cisco Switch – Use IOS Bootable USB Drive to Recover 3750x

May 5, 2017 kyle@smallguysit.com 0

Its possible that over time or when uploading new firmware to a switch the firmware that the switch is using to boot will become corrupt, in this case you will be left at a “switch:” […]

Grid

Python Tkinter – Text Entry Widget

May 1, 2017 kyle@smallguysit.com 0

Gathering input from a user in your GUI is something that will need to be done often, one basic way is to use a simple text entry field which i demonstrate below. In this example […]

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  • Cisco

    Cisco IOS – Set Terminal Length & Width

    There are times where you need to specify the length and width of the terminal when issuing commands either to properly format the output to be parsed by scripts easier, or to eliminate the need [...]
  • No Picture
    Grid

    Tkinter Grid – Create Whitespace Between Widgets

        By default when placing widgets several columns apart using Grid it will not show any of the cells because they have not been given any weight. I cover how to add a weight [...]
  • Network Admin

    Ubiquiti AirMAX Security Hole PR Issue

    So Last week it was made public a vulnerability in the AirMAX firmware that allowed for remote command execution affected some of their AirMAX products. I came across it via This Link on Spiceworks, now at first glance [...]
  • Cisco

    Cisco 3750x – Set Switch Priority in Stack

    These are instructions on how to specify a single switch in a switch stack to become the master switch every time and not hope the stack master election picks the one you want through a [...]
  • Python

    Python – List Comprehensions

    In Python you can use list comprehensions to shorten the amount of code that you need to use to accomplish tasks when working with lists. The first time I heard of list comprehensions it sounded [...]
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