// Exec Examples
//
// This macro demonstrates how to use the exec() function, 
// which executes a native command and returns the output
// as a string. In most of the examples, the output is displayed
// in the Log window since it is not assigned to a string.


// Linux and Mac OS X examples

   // run command with no arguments
   exec("ls");

   // run command with arguments
   exec("ls /tmp");

   // run command with arguments containing spaces
   exec("grep", "public static",  "/Users/wayne/ImageJ/source/ij/ImageJ.java");

   // run command built into shell
   exec("sh", "-c", "cd /tmp; pwd");

   // redirect command output to a file
   exec("sh", "-c", "ls>/tmp/test");

   // open web page in default browser on a Mac
   exec("open", "/ij/");

   // parse command output
   words = split(exec("uptime"));
   print("This computer has been up for "+words[2]+" days");

   // open contents of Results table in Excel on a Mac
   if (nResults==0) exit("Results table is empty");
   path = getDirectory("home")+"Results.xls";
   saveAs("Measurements", path);
   exec("open", path);


// Windows examples

   // run command with no arguments
   exec("help");

   // run command with arguments
   exec("help rename");

   // run command built into command interpreter
   exec("cmd /c dir");

   // run command with argument containing spaces
   exec("cmd", "/c", "dir", "c:\\program files");

   // open web page in default browser
   exec("open", "/ij/");

   // open contents of Results table in Excel
   if (nResults==0) exit("Results table is empty");
   path = getDirectory("home")+"Results.xls";
   saveAs("Measurements", path);
   //exec("open", path);
   exec("cmd", "/c", "start", "excel.exe", path);