add sysinfo command

bindings/java/src/net/hyperic/sigar/cmd/Shell.java

@@ -67,6 +67,7 @@ public class Shell extends ShellBase {
         registerCommandHandler("netstat", new Netstat(this));
         registerCommandHandler("version", new Version(this));
         registerCommandHandler("mps", new MultiPs(this));
+        registerCommandHandler("sysinfo", new SysInfo(this));
         try {
             //requires junit.jar
             registerCommandHandler("test", new SigarTestRunner(this));

bindings/java/src/net/hyperic/sigar/cmd/SysInfo.java

@@ -0,0 +1,119 @@
+package net.hyperic.sigar.cmd;
+
+import net.hyperic.sigar.Mem;
+import net.hyperic.sigar.Swap;
+import net.hyperic.sigar.SigarException;
+
+import java.io.File;
+import java.io.FilenameFilter;
+import java.io.FileReader;
+import java.io.BufferedReader;
+import java.io.IOException;
+
+/**
+ * Display System Information
+ */
+public class SysInfo extends SigarCommandBase {
+
+    public SysInfo(Shell shell) {
+        super(shell);
+    }
+
+    public SysInfo() {
+        super();
+    }
+
+    public String getUsageShort() {
+        return "Display system information";
+    }
+
+    public void output(String[] args) throws SigarException {
+        String osName = System.getProperty("os.name");
+
+        /**
+         * OS info
+         */
+        this.out.println(osName + " " +
+            System.getProperty("os.version") + " " +
+            System.getProperty("os.arch"));
+
+        /**
+         * craziness to try to determine the linux distro
+         */
+        if (osName.equals("Linux")) {
+            File etc = new File("/etc");
+            File[] release = etc.listFiles(new FilenameFilter()
+            {
+                public boolean accept(File dir, String name)
+                {
+                    boolean distroFile =
+                        name.toLowerCase().matches(".*elease.*");
+                    if (!distroFile) {
+                        distroFile = name.toLowerCase().matches(".*ersion.*");
+                    }
+                    return distroFile;
+                }
+            });
+
+            if (release.length != 1) {
+                this.out.println("Cannot determine Linux distribution!");
+                if (release.length > 1) {
+                    this.out.println("Possible version files:");
+                    for (int i = 0 ; i < release.length ; i++) {
+                        this.out.println("  " + release[i]);
+                    }
+                }
+            }
+            else {
+                try {
+                    //this.out.println(release[0].getAbsoluteFile() + ":");
+                    BufferedReader rel = new BufferedReader(
+                        new FileReader(release[0]));
+                    String line;
+                    while ((line = rel.readLine()) != null) {
+                        this.out.println(line);
+                    }
+                }
+                catch (IOException e) {
+                    this.out.println("Cannot determine Linux distribution!");
+                }
+            }
+        }
+
+        /**
+         * JVM info
+         */
+        this.out.println(System.getProperty("java.vm.name") + " - " +
+            System.getProperty("java.vm.vendor") + " [" +
+            System.getProperty("java.vm.version") + "]");
+        this.out.println(System.getProperty("java.specification.vendor") + " " +
+            System.getProperty("java.specification.name") + " " +
+            System.getProperty("java.specification.version"));
+        this.out.println("JAVA_HOME=" + System.getProperty("java.home"));
+        this.out.println("");
+
+        /**
+         * CPU info
+         */
+        net.hyperic.sigar.CpuInfo[] infos =
+            this.sigar.getCpuInfoList();
+        for (int i=0; i<infos.length; i++) {
+            net.hyperic.sigar.CpuInfo info = infos[i];
+            this.out.println("CPU " + i + ":");
+            this.out.println("  Vendor........" + info.getVendor());
+            this.out.println("  Model........." + info.getModel());
+            this.out.println("  Mhz..........." + info.getMhz());
+            this.out.println("  Cache size...." + info.getCacheSize());
+        }
+        this.out.println("");
+
+        /**
+         * memory info
+         */
+        new Free(this.shell).output(args);
+    }
+
+    public static void main(String[] args) throws Exception {
+        new SysInfo().processCommand(args);
+    }
+}