通过 Java 在 bash 文件中执行 NS 包

Question

我试图在 Ubuntu14.0 中通过 java 执行一个 bash 文件。 Bash 文件包含为 NS2

生成移动模型的代码

"#!/bin/bash +x
cd /home/maria/ns-allinone-2.35/ns-2.35/indep-utils/cmu-scen-gen 
ns cbrgen.tcl -type cbr -nn 10 -seed 1 -mc 5 -rate 5.0"

如果运行通过终端明确显示，文件是可执行的并提供输出。

但是当运行到 java 时，它会给出以下错误：

/home/maria/Documents/test.sh: line 4: ns: command not found
Execution failed.
org.apache.commons.exec.ExecuteException: Process exited with an error: 127 (Exit value: 127)
at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:404)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:166)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:153)
at test.opencmd.runScript(opencmd.java:18)
at test.opencmd.main(opencmd.java:30)

这是我的代码：

package test;

import java.io.IOException;
import org.apache.commons.exec.CommandLine;
import org.apache.commons.exec.DefaultExecutor;
import org.apache.commons.exec.ExecuteException;

public class opencmd {
    int iExitValue;
    String sCommandString;

    public void runScript(String command){
        sCommandString = command;
        CommandLine oCmdLine = CommandLine.parse(sCommandString);
        DefaultExecutor oDefaultExecutor = new DefaultExecutor();
        oDefaultExecutor.setExitValue(0);
        try {
            iExitValue = oDefaultExecutor.execute(oCmdLine);
        } catch (ExecuteException e) {
            System.err.println("Execution failed.");
            e.printStackTrace();
        } catch (IOException e) {
            System.err.println("permission denied.");
            e.printStackTrace();
        }
    }

    public static void main(String args[]){
        opencmd testScript = new opencmd();
        testScript.runScript("bash /home/maria/Documents/test.sh");
    }
}

Answer 1

请在下方：

Process p = Runtime.getRuntime().exec("/home/maria/ns-allinone-2.35/ns-2.35/indep-utils/cmu-scen-gen/setdest/setdest -v 2 -n 50 -p 2.0 -s 10.0 -t 200 -x 500 -y 500 -m 2 -M 15");
Process p = Runtime.getRuntime().exec("/home/maria/ns-allinone-2.35/bin/ns /home/maria/ns-allinone-2.35/ns-2.35/indep-utils/cmu-scen-gen/cbrgen.tcl -type cbr -nn 10 -seed 1 -mc 5 -rate 5.0");

通过 Java 在 bash 文件中执行 NS 包

executing NS package in a bash file through Java

java

bash

ns2