Problem while Invoke Shell Script function from Java Program

nanthagopal · 12-06-2012, 11:08 PM

Hi,

I have create a shell script with a function.

Code:

 #!/bin/bash

echo "Test shell script"

function checkfunction() 
{
  echo "hey!  shell script function called"
}

checkfunction

when i execute the above program in local/terminal. i got the output:
Test shell script
hey! shell script function called

NOTE:
When i invoke the above shell script from java using the code

Code:

Runtime.getRuntime().exec(filename.sh) ;

i got the output:
Test shell script

Here the problem is, the function in shell script is not invoked.

whether i have to export the functions?
Please Suggest me, how to solve this problem.

Regards,
Nanthagopal A

eSelix · 12-07-2012, 03:07 PM

Do you really have space as first character in your script?

Code:

 #!/bin/bash
# rest of code

It shouldn't be there. With space at the beggining bash is not invoked and probably another shell execute rest of your script, which have different syntax, for example "dash" no need "function" word to define function. You should check exit status (by waitFor() function) and grab standard error stream to see if there is any errors.