Need Help on Executing Shell Scripts through PL-SLQ

Question

Hi All,
I am trying to execute a shell script from PL-SQL but I am not getting it right .
the code i used is as follows
----JAVA CLASS ---
CREATE OR REPLACE AND COMPILE JAVA SOURCE NAMED "Host" AS
import java.io.*;
public class Host {
public static void executeCommand(String command) {
try {
String[] finalCommand;
if (isWindows()) {
finalCommand = new String[4];
// Use the appropriate path for your windows version.
finalCommand[0] = "C:\\windows\\system32\\cmd.exe"; // Windows XP/2003
//finalCommand[0] = "C:\\winnt\\system32\\cmd.exe"; // Windows NT/2000
finalCommand[1] = "/y";
finalCommand[2] = "/c";
finalCommand[3] = command;
else {
finalCommand = new String[3];
finalCommand[0] = "/bin/sh";
finalCommand[1] = "-c";
finalCommand[2] = command;
final Process pr = Runtime.getRuntime().exec(finalCommand);
pr.waitFor();
new Thread(new Runnable(){
public void run() {
BufferedReader br_in = null;
try {
br_in = new BufferedReader(new InputStreamReader(pr.getInputStream()));
String buff = null;
while ((buff = br_in.readLine()) != null) {
System.out.println("Process out :" + buff);
try {Thread.sleep(100); } catch(Exception e) {}
br_in.close();
catch (IOException ioe) {
System.out.println("Exception caught printing process output.");
ioe.printStackTrace();
finally {
try {
br_in.close();
} catch (Exception ex) {}
}).start();
new Thread(new Runnable(){
public void run() {
BufferedReader br_err = null;
try {
br_err = new BufferedReader(new InputStreamReader(pr.getErrorStream()));
String buff = null;
while ((buff = br_err.readLine()) != null) {
System.out.println("Process err :" + buff);
try {Thread.sleep(100); } catch(Exception e) {}
br_err.close();
catch (IOException ioe) {
System.out.println("Exception caught printing process error.");
ioe.printStackTrace();
finally {
try {
br_err.close();
} catch (Exception ex) {}
}).start();
catch (Exception ex) {
System.out.println(ex.getLocalizedMessage());
public static boolean isWindows() {
if (System.getProperty("os.name").toLowerCase().indexOf("windows") != -1)
return true;
else
return false;
---PROCEDURE TO BE EXECUTED WHICH USES THE ABOVE JAVA CLASS IS ----
CREATE OR REPLACE PROCEDURE Host_Command (p_command IN VARCHAR2)
AS LANGUAGE JAVA
NAME 'Host.executeCommand (java.lang.String)';
--- THE PERMISSIONS ---
call dbms_java.grant_permission('SYSTEM', 'SYS:java.io.FilePermission', '<<ALL FILES>>', 'read ,write, execute, delete');
call dbms_java.grant_permission('SYSTEM', 'SYS:java.lang.RuntimePermission', 'writeFileDescriptor', '');
call dbms_java.grant_permission('SYSTEM', 'SYS:java.lang.RuntimePermission', 'readFileDescriptor', '');
--- THE SHELL SCRIPT IS -----
#!/bin/sh
# This script removes the carriage returns from the Files having .DAT1 extensions in the /test/ Directory
# and the sends the single line stream to the new file with the use of 'gawk' command
# so finaly the files with same primary name but different secondary name are created
# e.g. file 'test.DAT1' is onverted to 'test.DAT'
# LOOP on /test/ DIRECTORY FOR SEARCHING FILES HAVING EXTENSION *.DAT1
for file_name in `ls /test/*.DAT1`
do
new_file_name=`echo $file_name | sed 's/DAT1/DAT/'`
# SEND THE CONTAINTS OF SELECTED FILE IN LOOP AS A CONTINUOUS STREAM TO NEW FILE NAME USING 'gawk' COMMAND
gawk 'BEGIN { ORS = "''" } { print $0 }' $file_name >> $new_file_name
# ABOVE LINE WILL CREATE A NEW FILE WITH SAME PRIMARY NAME BUT .DAT AS SECONDARY NAME(EXTENSION)
# REMOVE THE PRIOR FILE(s) AFTER SUCCESSFUL CALL TO 'gawk'
# $? returns 0 if the call to gawk command is succesfull
if test 0 = "$?"
     then
     rm -f $file_name
fi
done
# END LOOP ON /test/ DIRECTORY
---THE CALL TO THE PROCEDURE --
SQL>CALL DBMS_JAVA.SET_OUTPUT(1000000);
SQL>SET SERVEROUTPUT ON SIZE 1000000
SQL>exec host('/root/sh ecs_script.sh'); -----------------------------------------------1
now, the statement 1 is the path of the Shell Script ecs_script.sh
which uses gawk command and does some operations on some file..
but when i give the call in Statement 1 its giving error like
/bin/sh is not a directory
so i am not getting wHat should I do so that my script "ecs_script.sh" gets executed..
Please Help.

Answer 1

@ Bhagat & Michaels
Dear Friends,
I changed my shell name as per ur suggestions
and recompiled the Java class source with
finalCommand[0] = "/bin/bash"; instead of finalCommand[0] = "/bin/sh";
and then recompiled the host procedure
executed the host procedure as per ur suggestion as follows (with out put)
SQL> exec host('/bin/bash ecs_script.sh')
PL/SQL procedure successfully completed.
bt, bt, bt, it still did not do any operations defined in the "ecs_script.sh"
in fact the script did nt executed.......
pls help , I am loosing my time..
regards.