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LUKE CHIKKALA

Tech Notes

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OpenGL on macOS

Apple officially deprecated the support for OpenGL since macOS 10.14 Mojave. As such, building a basic window (or a triangle, if you’re...

Wireshark TCP Filters

Of the billion and a half display filters, here are a few useful ones for analyzing TCP packets. However, I won’t be updating it...

“Say” macOS Terminal Speaker

Example: say "Hello, from MacLife" There are 48 built-in voices as of macOS Catalina: To get a list of available voice, type: say -v ?...

TELNET Negotiation Sequence Options on PuTTY

With the default settings of PuTTY (at least as of v0.73 released: 29-Sep-19) as a TELNET client, it sends the following characters as a...

Remove Shadow from Mac Screenshots

defaults write com.apple.screencapture disable-shadow -bool TRUE; killall SystemUIServer Put it back, defaults write...

Terminal Download Tools

To download a file from a website: Syntax: curl www.example.com --output my.file Example: curl https://wpcom-themes.svn.automattic.com/...

Alias in Terminal (macOS)

1. Open Terminal and navigate to the home [~] directory. cd ~ or cd 2. Open .bash_profile nano .bash_profile If there isn’t one...

How to find IPv6 Address of a host?

On macOS & Linux Use the host command host -t AAAA www.google.com host is a terminal tool for performing DNS lookups. Output:

What is my IP

On macOS & Linux (or any platform in which “curl” is installed) curl ipinfo.io/ip

Personal VIM Preferences

On UNIX, Linux & MacOS only Type the following to change the current directory to Home directory: cd $HOME Edit the file “.vimrc” by...

Deleting known SSH Hosts on UNIX

Using terminal, go to /Users/Username/.ssh [code]cd /Users/John/.ssh[/code] Open the known_hosts file with a text editor of your choice...

Browser

Change the User-Agent by inspecting the element. Go to Network > three vertical dots at extreme right corner of network window > More...

KillSwitch for VBS Scripts

Create a batch with the following line: [code]taskkill /F /IM wscript.exe /T[/code] HOW TO CREATE A BATCH FILE? wait, how did you learn...

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