The jrunscript Command- Line Shell - Scripting in Java: Integrating with Groovy and JavaScript - page 276

Table 9-2. Interpretation of [arguments] in Combination of the -e or -f Option

-e or -f option Arguments Interpretation

Yes Yes

If -e or -f option is specified, all arguments are passed
to the script as script arguments.

No Yes

If arguments are specified with no -e or -f option, the
first argument is considered a script file to run. The
rest of the arguments, if any, are passed to the script as
script arguments.

No No

If arguments and -e or -f option are missing, the shell
works in interactive mode, where the shell executes
the script entered in the standard input interactively.

Execution Modes of the Shell
You can use the jrunscript shell in the following three modes:

• One-liner mode

• Batch mode

• Interactive mode

One-liner Mode
The -e option lets you use the shell in one-liner mode. It executes one line of script. The
following command prints a message on the standard output using the Nashorn engine:

C:\>jrunscript -e "print('Hello Nashorn!');"
Hello Nashorn!

C:\>

In one-liner mode, the entire script must be entered on one line. However, a
one-liner script may contain multiple statements.

Batch Mode
The -f option lets you use the shell in batch mode. It executes a script file. Consider a
script file named jrunscripttest.js as shown in Listing 9-1.