Name

jrunscript - command line script shell

SYNOPSIS

f3
f3jrunscript [ f2options ] [ 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

f3jrunscript 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.

f3NOTE: This tool is f3experimental and may f3not 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 f2path

-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 f3-e or f3-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 f3-e or f3-f option are used, then all [arguments..] are passed as script arguments. If [arguments..], f3-e and f3-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

f3
jrunscript -e "print('hello world')"
jrunscript -e "cat('http://www.example.com')"

Use specified language and evaluate given script file

f3
jrunscript -l js -f test.js

Interactive mode

f3
jrunscript
js> print('Hello World\n');
Hello World
js> 34 + 55
89.0
js> t = new java.lang.Thread(function() { print('Hello World\n'); })
Thread[Thread-0,5,main]
js> t.start()
js> Hello World
 
js>

Run script file with script arguments

f3
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.