Ok, I’ve found a solution. It should look like this: Process p = Runtime.getRuntime().exec(new String[]{“su”, “-c”, “system/bin/sh”}); DataOutputStream stdin = new DataOutputStream(p.getOutputStream()); //from here all commands are executed with su permissions stdin.writeBytes(“ls /data\n”); // \n executes the command InputStream stdout = p.getInputStream(); byte[] buffer = new byte[BUFF_LEN]; int read; String out = new String(); //read … Read more
Results: Use who am i | awk ‘{print $1}’ OR logname as no other methods are guaranteed. Logged in as self: evan> echo $USER evan evan> echo $SUDO_USER evan> echo $LOGNAME evan evan> whoami evan evan> who am i | awk ‘{print $1}’ evan evan> logname evan evan> Normal sudo: evan> sudo -s root> echo … Read more
To run root commands, you have to use the flllowing format: public void RunAsRoot(String[] cmds){ Process p = Runtime.getRuntime().exec(“su”); DataOutputStream os = new DataOutputStream(p.getOutputStream()); for (String tmpCmd : cmds) { os.writeBytes(tmpCmd+”\n”); } os.writeBytes(“exit\n”); os.flush(); } where you pass in an array of strings, each string being a command that needs to be executed. For example: … Read more
Much simpler: use sudo to run a shell and use a heredoc to feed it commands. #!/usr/bin/env bash whoami sudo -i -u someuser bash << EOF echo “In” whoami EOF echo “Out” whoami (answer originally on SuperUser)
try running: su -c “Your command right here” -s /bin/sh username This will run the command as username given that you have permissions to sudo as that user.
For sudo there is a -S option for accepting the password from standard input. Here is the man entry: -S The -S (stdin) option causes sudo to read the password from the standard input instead of the terminal device. This will allow you to run a command like: echo myPassword | sudo -S ls /tmp … Read more