September 2017 - Kyle Kowalczyk

Python – String Formatting

September 30, 2017 kyle@smallguysit.com 3

Creating a string using variables is not a complex task but when chaining variables together it is very easy to make a mess of a few lines of code just to create a string you […]

Cisco

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

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:” [...]
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 [...]
Uncategorized

For, Until, While Loops and If statements – Bash scripting

In this video tutorial I demonstrate syntax and behavior of running for, until, and while loops in addition to if statements in bash. This is geared toward the beginner who is learning loops and flow [...]
Linux

OpenSSH – Regenerate Public Key from Private Key

Lets say you have a private/public key pair that you use to login to your server via SSH and you lose the public key, either it was deleted or corrupt and you don’t want to [...]
Cisco

Cisco 3750x – Update Firmware from TFTP

The last way I want to upgrade firmware is through the Serial port, even changing the baud rate to the highest possible takes forever to transfer an image, what I like to do is either hook my laptop [...]

Kyle Kowalczyk

Technical Blog

Month: September 2017

Python – String Formatting

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

Cisco IOS – Set Terminal Length & Width

For, Until, While Loops and If statements – Bash scripting

OpenSSH – Regenerate Public Key from Private Key

Cisco 3750x – Update Firmware from TFTP