add ulimit command

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

@@ -74,6 +74,7 @@ public class Shell extends ShellBase {
         registerCommandHandler("mps", new MultiPs(this));
         registerCommandHandler("sysinfo", new SysInfo(this));
         registerCommandHandler("time", new Time(this));
+        registerCommandHandler("ulimit", new Ulimit(this));
         registerCommandHandler("who", new Who(this));
         if (SigarLoader.IS_WIN32) {
             registerCommandHandler("service", new Win32Service(this));

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

@@ -0,0 +1,58 @@
+package net.hyperic.sigar.cmd;
+
+import net.hyperic.sigar.ResourceLimit;
+import net.hyperic.sigar.SigarException;
+
+/**
+ * Display system resource limits.
+ */
+public class Ulimit extends SigarCommandBase {
+
+    public Ulimit(Shell shell) {
+        super(shell);
+    }
+
+    public Ulimit() {
+        super();
+    }
+
+    public String getUsageShort() {
+        return "Display system resource limits";
+    }
+
+    private static String format(ResourceLimit rlimit, long val) {
+        if (val == rlimit.getUnlimited()) {
+            return "unlimited";
+        }
+        else {
+            return String.valueOf(val);
+        }
+    }
+
+    public void output(String[] args) throws SigarException {
+        ResourceLimit rlimit = this.sigar.getResourceLimit();
+
+        println("core file size......." +
+                format(rlimit, rlimit.getCoreCur()));
+        println("data seg size........" +
+                format(rlimit, rlimit.getDataCur()));
+        println("file size............" +
+                format(rlimit, rlimit.getFileSizeCur()));
+        println("max memory size......" +
+                format(rlimit, rlimit.getMemoryCur()));
+        println("open files..........." +
+                format(rlimit, rlimit.getOpenFilesCur()));
+        println("stack size..........." +
+                format(rlimit, rlimit.getStackCur()));
+        println("cpu time............." +
+                format(rlimit, rlimit.getCpuCur()));
+        println("max user processes..." +
+                format(rlimit, rlimit.getProcessesCur()));
+        println("virual memory........" +
+                format(rlimit, rlimit.getVirtualMemoryCur()));
+    }
+
+    public static void main(String[] args) throws Exception {
+        new Ulimit().processCommand(args);
+    }
+}