Resize Image

# Resize to max width/height 640
sips -Z 640 *.jpg

Convert Image Format

# Convert png to jpg
sips -s format jpeg *.png --out mydirectory

List Process Running on a Port

# eg. Port 8080
lsof -i :8080

Kill Process running on a Port

lsof -P | grep ':8080' | awk '{print $2}' | xargs kill -9

Creating Markdown Journal

Uses journal:

journal new -d /path/to/journal "My entry for today"

Extract MP3 from Youtube

Uses youtube-dl:

youtube-dl -x --audio-format=mp3

# Other handy youtube-dl
# Download in mp4 video format
youtube-dl -f mp4

Download a file with curl

curl -o myfile.mp3




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