Find and Replace characters in IFS file on iSeries(AS400)

Lets say you received a XML, CSV, TXT or any other type of file in the IFS directory and before processing the file and exporting the data to a DB2 database you want to manipulate it. Its very easy with the help of QSHELL sed command, here is how
> echo 'Today is Monday' | sed "s/Mon/Sun/"  
  Today is Sunday                            

In the above example we are taking a string and finding for string "Mon" and replacing it with "Sun". Here is how to do the same thing if we need to do it over a input file say input.txt and output the results in a new file named output.txt
> sed "s/Mon/Sun/" input.txt > output.txt   

What if the same word is there more than one time, the result will be more like this as it only replaces the first instance of the match
> echo "Today is Monday, I hate Monday's" | sed "s/Mon/Sun/"    
  Today is Sunday, I hate Monday's    

Now to fix that you have to use the global replacement /g
> echo "Today is Monday, I hate Monday's" | sed "s/Mon/Sun/g"    
  Today is Sunday, I hate Sunday's                               

How to replace a slash(/) since its used as a separater, You could use the backslash to escape the slash
> echo "Today is Monday/ I hate Monday's" | sed "s/\//,/g" 
  Today is Monday, I hate Monday's                         

In case you are familiar with Java programming then here a program to read a file and replace unwanted characters from an IFS file and create a new file.

public class ModifyIFSData {

 public static void main(String[] args) {

  String fromFileName =  args[0].trim();
  String toFileName =  args[1].trim();

  try {

   FileWriter fWriter = new FileWriter(toFileName.trim());
   BufferedWriter out = new BufferedWriter(fWriter);

   FileInputStream fstream = new FileInputStream(fromFileName.trim());
   DataInputStream in = new DataInputStream(fstream);
   BufferedReader br = new BufferedReader(new InputStreamReader(in));

   String strLine;
   int pos = 0;

   while ((strLine = br.readLine()) != null) {
    pos = strLine.indexOf("â€");
    if(pos > 0){
     strLine = strLine.substring(0,pos)+ strLine.substring(pos+3);
    strLine = strLine.replaceAll("â€", "");
    strLine = strLine.replaceAll("™", "'");
    strLine = strLine.replaceAll("Ø", "-");
    strLine = strLine.replaceAll("abc", "xyz");
  catch (Exception e){



  1. Once we reach there, so many wonderful fifa 14 coins dreams will come true and the pieces of our lives cheap fifa 14 coins will be fit together like a completed jigsaw puzzle. How restlessly we pace the aisles, damning the minutes loitering, waiting, waiting, waiting for the station.


  2. The share your really gives us excitement. Thanks for your sharing. If you feel tired at work or study try to participate in our games to bring the most exciting feeling. Thank you!
    hotmail sign in | red ball 1