net.i2p.util

Class ShellCommand

java.lang.Object

net.i2p.util.ShellCommand

public class ShellCommand
extends Object

Passes a command to the OS shell for execution and manages the input and output.

This class must be kept gcj-compatible.

Constructor Summary

Constructors

Constructor and Description
ShellCommand()

Method Summary

Modifier and Type	Method and Description
boolean	executeSilentAndWait(String[] commandArray) Passes a command to the shell for execution.
boolean	executeSilentAndWaitTimed(String[] commandArray, int seconds) Passes a command to the shell for execution.
boolean	executeSilentAndWaitTimed(String shellCommand, int seconds) Passes a command to the shell for execution.
static void	main(String[] args) Just does exec, this is NOT a test of ShellCommand.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ShellCommand

public ShellCommand()

Method Detail

executeSilentAndWait

public boolean executeSilentAndWait(String[] commandArray)

Passes a command to the shell for execution. This method blocks until all of the command's resulting shell processes have completed. Any output produced by the executed command will not be displayed.

Parameters:

commandArray - The command for the shell to execute, as a String[]. See Runtime.exec(String[]) for more info.

Returns:

true if the spawned shell process returns an exit status of 0 (indicating success), else false.

executeSilentAndWaitTimed

public boolean executeSilentAndWaitTimed(String[] commandArray,
                                         int seconds)

Passes a command to the shell for execution. This method blocks until all of the command's resulting shell processes have completed unless a specified number of seconds has elapsed first. Any output produced by the executed command will not be displayed.

Parameters:

commandArray - The command for the shell to execute, as a String[]. See Runtime.exec(String[]) for more info.

seconds - The method will return true if this number of seconds elapses without the process returning an exit status. A value of 0 here disables waiting.

Returns:

true if the spawned shell process returns an exit status of 0 (indicating success), OR if the time expires, else false.

executeSilentAndWaitTimed

public boolean executeSilentAndWaitTimed(String shellCommand,
                                         int seconds)

Passes a command to the shell for execution. This method blocks until all of the command's resulting shell processes have completed unless a specified number of seconds has elapsed first. Any output produced by the executed command will not be displayed. Warning, no good way to quote or escape spaces in arguments when shellCommand is a String. Use a String array for best results, especially on Windows.

Parameters:

shellCommand - The command for the shell to execute, as a String. You can't quote arguments successfully. See Runtime.exec(String) for more info.

seconds - The method will return true if this number of seconds elapses without the process returning an exit status. A value of 0 here disables waiting.

Returns:

true if the spawned shell process returns an exit status of 0 (indicating success), OR if the time expires, else false.

main

public static void main(String[] args)

Just does exec, this is NOT a test of ShellCommand.