osascript

Execute AppleScripts and other OSA language scripts. Executes the given script file, or standard input if none is given. Scripts may be plain text or compiled scripts. osascript was designed for use with AppleScript, but will work with any Open Scripting Architecture (OSA) language.

Syntax
      osascript [-l language] [-e command] [-s flags] [programfile]

Options
   
     -e command
	   Enter one line of a script.	If -e is given, osascript will not
	   look for a filename in the argument list.  Multiple -e commands may
	   be given to build up a multi-line script.  Because most scripts use
	   characters that are special to many shell programs (e.g., Apple-
	   Script uses single and double quote marks, `(', `)', and `*'),
	   the command will have to be correctly quoted and escaped to
	   get it past the shell intact.

     -l language
	   Override the language for any plain text files.  Normally, plain
	   text files are compiled as AppleScript.

     -s flags
	   Modify the output style.  The flags argument is a string consisting
	   of any of the modifier characters e, h, o, and s.  Multiple modi-
	   fiers can be concatenated in the same string, and multiple -s

	   options can be specified.  The modifiers come in exclusive pairs;
	   if conflicting modifiers are specified, the last one takes prece-
	   dence.  The meanings of the modifier characters are as follows:

	   h  Print values in human-readable form (default).
	   s  Print values in recompilable source form.

	      osascript normally prints its results in human-readable form:
	      strings do not have quotes around them, characters are not
	      escaped, braces for lists and records are omitted, etc.  This is
	      generally more useful, but can introduce ambiguities.  For exam-
	      ple, the lists `{"foo", "bar"}' and `{{"foo", {"bar"}}}' would
	      both be displayed as `foo, bar'.	To see the results in an unam-
	      biguous form that could be recompiled into the same value, use
	      the s modifier.

	   e  Print script errors to stderr (default).
	   o  Print script errors to stdout.

	      osascript normally prints script errors to stderr, so downstream
	      clients only see valid results.  When running automated tests,
	      however, using the o modifier lets you distinguish script
	      errors, which you care about matching, from other diagnostic
	      output, which you don't.

osascript in Mac OS X 10.0 would translate `\r' characters in the output to `\n' and provided c and r modifiers for the -s option to change this.
osascript now always leaves the output alone; pipe through tr if necessary.

Examples

Close safari:
$ osascript -e 'quit app "safari.app"'

Bugs:
osascript does not yet provide any way to pass arguments to the script.

“Every time I get a script it's a matter of trying to know what I could do with it. I see colors, imagery. It has to have a smell. It's like falling in love. You can't give a reason why” ~ Paul Newman

Related:

osascript man page - Apple.com
osalang(1) - list the OSA languages installed on your system.
osacompile - Compile Applescript


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