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.\"     Arch: generic

.\"     Software: JDK 8

.\"     Date: 21 November 2013

.\"     SectDesc: Scripting Tools

.\"     Title: jrunscript.1

.\"

.if n .pl 99999

.TH jrunscript 1 "21 November 2013" "JDK 8" "Scripting Tools"

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.SH NAME    

jrunscript \- Runs a command-line script shell that supports interactive and batch modes\&. This command is experimental and unsupported\&.

.SH SYNOPSIS    

.sp     

.nf     

\fBjrunscript\fR [\fIoptions\fR] [\fIarguments\fR]

.fi     

.sp     

.TP     

\fIoptions\fR

The command-line options\&. See Options\&.

.TP     

\fIarguments\fR

Arguments, when used, follow immediately after options or the command name\&. See Arguments\&.

.SH DESCRIPTION    

The \f3jrunscript\fR command is a language-independent command-line script shell\&. The \f3jrunscript\fR command supports both an interactive (read-eval-print) mode and a batch (\f3-f\fR option) mode of script execution\&. By default, JavaScript is the language used, but the \f3-l\fR option can be used to specify a different language\&. By using Java to scripting language communication, the \f3jrunscript\fR command supports an exploratory programming style\&.

.SH OPTIONS    

.TP

-classpath \fIpath\fR

.br

Indicate where any class files are that the script needs to access\&.

.TP

-cp \fIpath\fR

.br

Same as \f3-classpath\fR\f3path\fR\&.

.TP

-D\fIname\fR=\fIvalue\fR

.br

Sets a Java system property\&.

.TP

-J\fIflag\fR

.br

Passes \f3flag\fR directly to the Java Virtual Machine where the \f3jrunscript\fR command is running\&.

.TP

-I \fIlanguage\fR

.br

Uses the specified scripting language\&. By default, JavaScript is used\&. To use other scripting languages, you must specify the corresponding script engine\&'s JAR file with the \f3-cp\fR or \f3-classpath\fR option\&.

.TP

-e \fIscript\fR

.br

Evaluates the specified script\&. This option can be used to run one-line scripts that are specified completely on the command line\&.

.TP

-encoding \fIencoding\fR

.br

Specifies the character encoding used to read script files\&.

.TP

-f \fIscript-file\fR

.br

Evaluates the specified script file (batch mode)\&.

.TP

-f -

.br

Reads and evaluates a script from standard input (interactive mode)\&.

.TP

-help

.br

Displays a help message and exits\&.

.TP

-?

.br

Displays a help message and exits\&.

.TP

-q

.br

Lists all script engines available and exits\&.

.SH ARGUMENTS    

If arguments are present and if no \f3-e\fR or \f3-f\fR option is used, then the first argument is the script file and the rest of the arguments, if any, are passed to the script\&. If arguments and \f3-e\fR or the \f3-f\fR option are used, then all arguments are passed to the script\&. If arguments, \f3-e\fR and \f3-f\fR are missing, then interactive mode is used\&. Script arguments are available to a script in an engine variable named \f3arguments\fR of type \f3String\fR array\&.

.SH EXAMPLES    

.SS EXECUTE\ INLINE\ SCRIPTS    

.sp     

.nf     

\f3jrunscript \-e "print(\&'hello world\&')"\fP

.fi     

.nf     

\f3jrunscript \-e "cat(\&'http://www\&.example\&.com\&')"\fP

.fi     

.nf     

\f3\fP

.fi     

.sp     

.SS USE\ SPECIFIED\ LANGUAGE\ AND\ EVALUATE\ THE\ SCRIPT\ FILE    

.sp     

.nf     

\f3jrunscript \-l js \-f test\&.js\fP

.fi     

.nf     

\f3\fP

.fi     

.sp     

.SS INTERACTIVE\ MODE    

.sp     

.nf     

\f3jrunscript\fP

.fi     

.nf     

\f3js> print(\&'Hello World\en\&');\fP

.fi     

.nf     

\f3Hello World\fP

.fi     

.nf     

\f3js> 34 + 55\fP

.fi     

.nf     

\f389\&.0\fP

.fi     

.nf     

\f3js> t = new java\&.lang\&.Thread(function() { print(\&'Hello World\en\&'); })\fP

.fi     

.nf     

\f3Thread[Thread\-0,5,main]\fP

.fi     

.nf     

\f3js> t\&.start()\fP

.fi     

.nf     

\f3js> Hello World\fP

.fi     

.nf     

\f3\fP

.fi     

.nf     

\f3js>\fP

.fi     

.nf     

\f3\fP

.fi     

.sp     

.SS RUN\ SCRIPT\ FILE\ WITH\ SCRIPT\ ARGUMENTS    

The test\&.js file is the script file\&. The \f3arg1\fR, \f3arg2\fR and \f3arg3\fR arguments are passed to the script\&. The script can access these arguments with an arguments array\&.

.sp     

.nf     

\f3jrunscript test\&.js arg1 arg2 arg3\fP

.fi     

.nf     

\f3\fP

.fi     

.sp     

.SH SEE\ ALSO    

If JavaScript is used, then before it evaluates a user defined script, the \f3jrunscript\fR command initializes certain built-in functions and objects\&. These JavaScript built-ins are documented in JsDoc-Toolkit at http://code\&.google\&.com/p/jsdoc-toolkit/

.RE

.br

'pl 8.5i

'bp