The DropDMG commands in the Services menu will become available the next time you log in.
DropDMG includes an optional dropdmg command-line tool. It can be installed as follows:
Open the Terminal application. To install the command-line tool, enter these commands:
sudo mkdir -p /usr/local/bin/ F=/Applications/DropDMG.app/Contents/Frameworks/DropDMGFramework.framework sudo ln -s "$F/Versions/A/dropdmg" /usr/local/bin/dropdmg
To install the manual, enter these commands:
sudo mkdir -p /usr/local/share/man/man1/ F=/Applications/DropDMG.app/Contents/Frameworks/DropDMGFramework.framework sudo ln -s "$F/Resources/dropdmg.1" /usr/local/share/man/man1/dropdmg.1