jrunscript(1)              OpenBSD Reference Manual              jrunscript(1)



NAME
       jrunscript - command line script shell

SYNOPSIS
       jrunscript [ options ] [ arguments... ]


PARAMETERS
       options
          Options, if used, should follow immediately after the command name.

       arguments
          Arguments, if used, should follow immediately after options or
          command name.

DESCRIPTION
       jrunscript is a command line script shell. jrunscript supports both an
       interactive (read-eval-print) mode and a batch (-f option) mode of
       script execution. This is a scripting language independent shell. By
       default, JavaScript is the language used, but the -l option can be used
       to specify a different language. Through Java to scripting language
       communication, jrunscript supports "exploratory programming" style.

       NOTE: This tool is experimental and may not be available in future
       versions of the JDK.

OPTIONS
       -classpath path
          Specify where to find the user's .class files that are accessed by
          the script.

       -cp path
          This is a synonym for -classpath path

       -Dname=value
          Set a Java system property.

       -J<flag>
          Pass <flag> directly to the Java virtual machine on which jrunscript
          is run.

       -l language
          Use the specified scripting language. By default, JavaScript is
          used. Note that to use other scripting languages, you also need to
          specify the corresponding script engine's jar file using -cp or
          -classpath option.

       -e script
          Evaluate the given script. This option can be used to run "one
          liner" scripts specified completely on the command line.

       -encoding encoding
          Specify the character encoding used while reading script files.

       -f script-file
          Evaluate the given script file (batch mode).

       -f -
          Read and evaluate a script from standard input (interactive mode).

       -help
          Output help message and exit.

       -?
          Output help message and exit.

       -q
          List all script engines available and exit.

ARGUMENTS
       If [arguments...] are present and if no -e or -f option is used, then
       the first argument is the script file and the rest of the arguments, if
       any, are passed as script arguments. If [arguments..] and -e or -f
       option are used, then all [arguments..] are passed as script arguments.
       If [arguments..], -e and -f are missing, interactive mode is used.
       Script arguments are available to a script in an engine variable named
       "arguments" of type String array.

EXAMPLES
       Executing inline scripts

          jrunscript -e "print('hello world')"
          jrunscript -e "cat('http://java.sun.com')"


       Use specified language and evaluate given script file

          jrunscript -l js -f test.js


       Interactive mode

          jrunscript
          js>print('hello world');
          hello world
          js>34 + 55
          89
          js> thread(function() { print('hello world'); }
          hello world
          js>


       Run script file with script arguments

          jrunscript test.js arg1 arg2 arg3


       test.js is script file to execute and arg1, arg2 and arg3 are passed to
       script as script arguments. Script can access these using "arguments"
       array.

SEE ALSO
       If JavaScript is used, then before evaluating any user defined script,
       jrunscript initializes certain built-in functions and objects. These
       JavaScript built-ins are documented in jsdocs.

                                  06 Aug 2006                    jrunscript(1)
