How to execute a command in Spring Shell?

Question

I have a problem with executing a command in Spring Shell. I'm using this code to blink my LED on a Raspberry PI but I'm getting a response error in the Tomcat's log.

JLineShellComponent shell;
Bootstrap bootstrap = new Bootstrap();      
shell = bootstrap.getJLineShellComponent();
shell.executeCommand("gpio -g write 17 1");
shell.stop();

The log output is:

org.springframework.shell.core.SimpleParser commandNotFound
WARNING: Command 'sudo gpio -g write 17 1' not found (for assistance press TAB)

When I'm using the echo command the problem persists.

could it be saying `sudo` is not found?! i assume its added by the library. — Jos, Jan 26 '16 at 18:00
The 'gpio' is the only command that goes wrong? Other commands work? It seems strange to me the fact that the command 'sudo' appear in the error message. — Sergio Marcelo C Figueiredo, Apr 14 '16 at 20:18

score 1 · Answer 1 · answered Jun 05 '16 at 20:12

1

If you want to execute an OS Command via Spring Shell you have to prepend an exclamation mark.

shell.executeCommand("! gpio -g write 17 1");

A better solution is to use no Spring Shell at all

Runtime.getRuntime().exec("gpio -g write 17 1");

answered Jun 05 '16 at 20:12

Jonas

159
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How to execute a command in Spring Shell?

1 Answers1