Default Screenshot Location

defaults write com.apple.screencapture location /Users/user1/Desktop/screenshots

iCloud Drive - Create Soft Link

# ln -s /Users/user1/Library/Mobile\ Documents/com~apple~CloudDocs /Users/user1/icloud_drive

Monitoring Tools

brew install htop
brew install glances

PID Of Process Listening on a specific port

# lsof -n -i4TCP:8080 | grep LISTEN
python-onb 6958 user1    8u  IPv6 0x6683620d0abf841f      0t0  TCP *:http-alt (LISTEN)

FFMPEG

brew install libav --with-fdk-aac --with-ffplay --with-freetype --with-libass --with-libquvi --with-libvorbis --with-libvpx --with-opus --with-x265