How do I execute Bash commands and collect the output from Java?

Question

How do I execute Bash commands and collect the output from Java?

Hi all, basically I am writing a basic console app, and would like to be able to run commands from it, such as sudo***, halt, ifconfig, etc.

Any insight?.

Answer 1

You can use processBuilder API for this purpose. See this example.

Answer 2

untested code:

Runtime run = Runtime.getRuntime();
Process pr = run.exec(bashcommand);
pr.waitFor();
BufferedReader buf = new BufferedReader(new InputStreamReader(pr.getInputStream()));

while ( ( String line ; line = buf.readLine() ) != null ) 
{
  System.out.println(line);
}