yoterpa/osx-command-line.md

## osx-command-line.md

      
    Raw
  

              osx-command-line.md
            
          
    App Icons

Create App Icon

Function to quickly create an application icon from 1024px master file.
function mkicns() {
    if [[ -z "$@" ]]; then
        echo "Input file missing"
    else
        filename=${1%.*}
        mkdir $filename.iconset
        sips -z 16 16   $1 --out $filename.iconset/icon_16x16.png
        sips -z 32 32   $1 --out $filename.iconset/icon_16x16@2x.png
        sips -z 32 32   $1 --out $filename.iconset/icon_32x32.png
        sips -z 64 64   $1 --out $filename.iconset/icon_32x32@2x.png
        sips -z 128 128 $1 --out $filename.iconset/icon_128x128.png
        sips -z 256 256 $1 --out $filename.iconset/icon_128x128@2x.png
        sips -z 256 256 $1 --out $filename.iconset/icon_256x256.png
        sips -z 512 512 $1 --out $filename.iconset/icon_256x256@2x.png
        sips -z 512 512 $1 --out $filename.iconset/icon_512x512.png
        cp $1 $filename.iconset/icon_512x512@2x.png
        iconutil -c icns $filename.iconset
        rm -r $filename.iconset
    fi
}
Disk Images

Create Disk Image From Folder Contents

hdiutil create -volname "Volume Name" -srcfolder /path/to/folder -ov diskimage.dmg
If you'd like to encrypt the disk image:
hdiutil create -encryption -stdinpass -volname "Volume Name" -srcfolder /path/to/folder -ov encrypted.dmg
By default, you'll be prompted for a password. You can automate that by piping in a password:
echo -n YourPassword | hdiutil create -encryption -stdinpass -volname "Volume Name" -srcfolder /path/to/folder -ov encrypted.dmg
Convert File to HTML

Supported formats are plain text, rich text (rtf) and Microsoft Word (doc/docx).
textutil -convert html file.ext
Change Working Directory to Finder Path

If multiple windows are open, it chooses the top-most one.
cd "$(osascript -e 'tell app "Finder" to POSIX path of (insertion location as alias)')"
Open Current Folder

open .
Prevent System Sleep

Prevent sleep for 1 hour:
caffeinate -u -t 3600
Convert Audio File to iPhone Ringtone

afconvert input.mp3 ringtone.m4r -f m4af
Speak Text with System Default Voice

say 'All your base are belong to us!'
Auto-Play Videos in QuickTime Player

defaults write com.apple.QuickTimePlayerX MGPlayMovieOnOpen 1
TCP/IP

Show Application Using a Certain Port

This outputs all applications currently using port 80.
sudo lsof -i :80
Show External IP Address

dig +short myip.opendns.com @resolver1.opendns.com
Show Wi-Fi Network Passwords

Exchange SSID with the SSID of the access point you wish to query the password from.
security find-generic-password -D "AirPort network password" -a "SSID" -gw