66 lines
1.9 KiB
Java
66 lines
1.9 KiB
Java
import java.io.IOException;
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import java.nio.file.Path;
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/**
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* Realization of class dedicated to the control
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* of GNU Screen sessions
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* <p>
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* Created by daniil on 02.04.16.
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*/
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public class ScreenLib {
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/**
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* Start a screen with certain ID
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* and execute a command inside it
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*
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* @param screenName Screen ID
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* @param runPath Home path of started screen
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* @param command Command [+args] to execute inside the screen
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* @throws IOException
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*/
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public void startScreen(String screenName, Path runPath, String... command) throws IOException {
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assert screenName != null && screenName.length() != 0;
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assert runPath != null;
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// Merge two arrays
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String[] commandBase = new String[command.length + 3];
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commandBase[0] = "screen";
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commandBase[1] = "-dmS";
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commandBase[2] = screenName;
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System.arraycopy(command, 0, commandBase, 3, command.length);
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ProcessBuilder processBuilder = new ProcessBuilder(commandBase);
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processBuilder.directory(runPath.toFile());
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processBuilder.start();
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}
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/**
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* Send command to specific screen
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*
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* @param screenName Screen ID
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* @param command Command to send
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* @throws IOException
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*/
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public void sendCommand(String screenName, String command) throws IOException {
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assert screenName != null;
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assert command != null;
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ProcessBuilder processBuilder = new ProcessBuilder("screen", "-S", screenName, "-p", "0", "-X", "stuff", String.format(command + "%n"));
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processBuilder.start();
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}
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/**
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* Force terminate a screen session
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*
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* @param screenName Screen ID
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* @throws IOException
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*/
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public void killScreen(String screenName) throws IOException {
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assert screenName != null;
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ProcessBuilder processBuilder = new ProcessBuilder("screen", "-X", "-S", screenName, "quit");
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processBuilder.start();
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}
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}
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