java Runtime.exec to run shell script

Question

I am using Runtime.getRuntime().exec() to run a shell script from java code. The code works fine when I pass the parameter as string

      Runtime.getRuntime().exec("sh test.sh")

Since I have to pass additional arguments which are paths with spaces, so I replaced String with String array.

      String[] cmd = {"sh test.sh", "/Path/to my/resource file"};
      Runtime.getRuntime().exec(cmd)

I also tried with

      String[] cmd = {"sh test.sh"};
      Runtime.getRuntime().exec(cmd)

But neither of them worked. Its throwing exception

   java.io.IOException: Cannot run program "sh test.sh":
   java.io.IOException: error=2, No such file or directory

Why is the same script file when passed as String worked and when used with String array is throwing exception. Has anyone faced this issue. Please help me out to make this work with string array as arugument to Runtime.exec(). Thanks in advance.

You should be use the ProcessBuilder as mentioned in your previous question stackoverflow.com/questions/12812345/… — MadProgrammer

Jayan Jayan · Accepted Answer · 2012-10-11T06:10:01

First string became the command. There is no file 'sh test.sh' to be executed.

Change

 String[] cmd = {"sh test.sh", "/Path/to my/resource file"};

to

String[] cmd = {"sh",  "test.sh", "/Path/to my/resource file"};

(In general use process builder API)

java Runtime.exec to run shell script

1 Answers