Question

I have a code which executes a command in Linux box (ls - latr /home/ars | awk '{if(NR>1)print}') which gives me list of directories along with its information. How do I put it into some array or list so that depending on each line I can get filename, permissions etc from the (list or array)!!

Here is my code which prints an output at the bottom of my question
here cmd=ls - latr /home/ars | awk '{if(NR>1)print}'

function calling

HashMap<String,String> params = IntermediateResults.get("userparams")
    Map env=AppContext.get(AppCtxProperties.environmentVariables)
    def fClass = new GroovyClassLoader().parseClass( new File( 'plugins/infa9/Infa9CommandExecUtil.groovy' ) )
    String cmd="ls -latr "+rrs.get("linkpath")+" | awk '{if(NR>1)print}'"
    String res=fClass.newInstance().fetchInformation( params, env, cmd )

my function called

public String fetchInformation( Map<String,String> params, Map env, String cmd ) 
{
try
{
    Process proc = Runtime.getRuntime().exec(cmd);
    InputStream stdin = proc.getInputStream();
    InputStreamReader isr = new InputStreamReader(stdin);
    BufferedReader br = new BufferedReader(isr);
    String line = null;
    while ((line = br.readLine()) != null)
    {
        result.append(line);
        println "$line" // This output is given at the end
    }
    int exitVal = proc.waitFor();

} 
catch (IOException io) 
{
    io.printStackTrace();
}
catch (InterruptedException ie) 
{
    ie.printStackTrace();
}
//println("\n\n"+result)
return  result
 }

my output

/data/u01/app/oracle/10.2.0/db_1:
total 260
-rwxr-xr-x  1 oracle dba     0 Jun  7  2005 root.sh.old
drwxr-xr-x  4 oracle dba  4096 Jan 17  2007 xdk
drwxr-xr-x  4 oracle dba  4096 Jan 17  2007 uix
drwxr-xr-x  3 oracle dba  4096 Jan 17  2007 tg4tera
drwxr-xr-x  3 oracle dba  4096 Jan 17  2007 tg4sybs
drwxr-xr-x  3 oracle dba  4096 Jan 17  2007 tg4ingr
drwxr-xr-x  3 oracle dba  4096 Jan 17  2007 tg4ifmx

So how can I put the above output in some List so that on each line I can get permissions, hardlink,owner, group,filesize,month, date, time, year and finally filename?

Update

This is what I am trying to do, is there a better way may be by using maps?

 List<List<String>> frows = new ArrayList<List<String>>()
    while ((line = br.readLine()) != null)
    {
        List<String> fileList= new ArrayList<String>()
        result.append(line);
        String[] strs = line.split(" ")
        for(item in strs)
        {
            //print "$item "
            fileList.add(item)

        }

        frows.add(fileList)
    }

    for (List<String> l : frows) 
    {
      for (String s : l) {
        print "$s"
      }
      println ""
    }

Answer 1

Create a class say FileDetail with properties permissions, hardlink,owner, group,filesize,month, date, time, year and filename. Inside your method

List<FileDetail> fileDetails = new ArrayList<FileDetail>();
while ((line = br.readLine()) != null)
    {            
        FileDetail file = new FileDetail();
        println "$line" // This output is given at the end
        // parse - use space delimiter and String.split() API
        String[] strs = line.split(" ");
        // set values to "file"
        // add to list
        fileDetails .add(file);
    }
 return fileDetails;

Using Map,

    List<Map<String, String>> files = new ArrayList<Map<String, String>>()
    while ((line = br.readLine()) != null) {
            Map<String, String> file = new Map<String, String>()       
            String[] strs = line.split(" ")        
            // Find the order of fields, but it is system dependent, may not work in futrue           
            file.add("PERMISSIONS", strs[0]); // and so on for next and you may need to trim map value 
            files.add(file);
            println "$line"
    } 
return files;