osascript: add page (#1440)

pages/osx/osascript.md

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+# osascript
+
+> Run AppleScript or JavaScript for Automation (JXA) from the command line.
+
+- Run an AppleScript command:
+
+`osascript -e '{{say "Hello world"}}'`
+
+- Run multiple AppleScript commands:
+
+`osascript -e '{{say "Hello"}}' -e '{{say "world"}}'`
+
+- Run an AppleScript file:
+
+`osascript {{path/to/apple}}.scpt`
+
+- Get the bundle identifier of an application (useful for `open -b`):
+
+`osascript -e 'id of app "{{Application}}"'`
+
+- Run a JavaScript command:
+
+`osascript -l JavaScript -e '{{console.log("Hello world");}}'`
+
+- Run a JavaScript file:
+
+`osascript -l JavaScript {{path/to/script.js}}`