jrunscript
command line script shell
Synopsis
jrunscript
[ options ] [ arguments... ]
add an example, a script, a trick and tips
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.
source
jrunscript -cp ../build/js-engine.jar:../lib/js.jar -l
rhino-nonjdk $*
source
cd "$JS_ROOT"
exec jrunscript -f "program.js"
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.
parameters
options
Options, if used, should follow immediately after the command
name.
arguments
Arguments, if used, should follow immediately after options or
command name.
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.