key_equivalents

defaults write .GlobalPreferences NSUserKeyEquivalents '{ "Paste and Match Style" = "@$v"; "Select Next Tab" = "@]"; "Select Previous Tab" = "@["; }'

defaults write com.apple.iChat NSUserKeyEquivalents '{ "Clear Transcript" = "^l"; "Close Conversation..." = "@w"; "Select Next Conversation" = "@]"; "Select Previous Conversation" = "@["; }'

defaults write com.skype.skype NSUserKeyEquivalents '{ "Next Conversation" = "@]"; "Previous Conversation" = "@["; }'

defaults write com.apple.mail NSUserKeyEquivalents '{ "Get All New Mail" = "@r"; Send = "@\\U21a9"; }'

defaults write com.apple.safari NSUserKeyEquivalents '{ "Disable JavaScript" = "@j"; }'