[英]Trying to run rpm2cpio with java
I've tried running the command in java but with no luck 我试过在Java中运行命令但没有运气
rpm2cpio <rpmName> | cpio -imdv
This is my current Code 这是我当前的代码
public static void decompress() {
System.out.println("Decompression has started");
Archiver archiver = ArchiverFactory.createArchiver(ArchiveFormat.TAR, CompressionType.GZIP);
try {
archiver.extract(autoUpdateFile, tempDestination);
for(File currentRPM: new File("./temp/patches/rpms/").listFiles()) {
if(currentRPM.getName().contains("Data")) {
ProcessBuilder decompressRPM = new ProcessBuilder(
new String[] {"rpm2cpio", currentRPM.getAbsolutePath(), "cpio -idmv"});
Process startDecompression = decompressRPM.start();
InputStream inputFromDecompression = startDecompression.getInputStream();
BufferedReader inputReader = new BufferedReader(new InputStreamReader(inputFromDecompression));
String line = null;
System.out.println("From Input Buffer");
while((line = inputReader.readLine()) != null) {
System.out.println(line);
}
}
}
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("Decompression ended");
}
The main idea is that I have a compressed file which contains multiple files inside and in one of the files exists a list of rpms that I need decompressed to get some of the data out to update the project. 主要思想是我有一个压缩文件,其中包含多个文件,并且在一个文件中存在一个rpm列表,我需要对其进行解压缩以获取一些数据以更新项目。
Is there any way that I can run such a command or do I need to use a library? 有什么方法可以运行这样的命令,还是需要使用库?
Thank you. 谢谢。
Update: thanks to @Brian I managed to fix it by changing from 更新:感谢@Brian,我设法通过更改从
ProcessBuilder decompressRPM = new ProcessBuilder(
new String[] {"rpm2cpio", currentRPM.getAbsolutePath(), "cpio -idmv"});
Process startDecompression = decompressRPM.start();
to 至
String[] decompressionCommand = {"/bin/sh", "-c", "rpm2cpio " + currentRPM.getAbsolutePath() + " | cpio -idmv"};
Process startDecompression = Runtime.getRuntime().exec(decompressionCommand);
But I ended up with another problem. 但是我最后遇到了另一个问题。 I'm getting permission denied.
我的权限被拒绝。 I will be searching around for a solution and in case I find something I will post it here for future reference.
我将四处寻找解决方案,以防万一我将其发布在此处以供将来参考。
It seems that it works just fine now. 看来现在一切正常。 The solution is pretty simple, it works with both ProcessBuilder and String[]... Runtime.getRuntime.exec().
该解决方案非常简单,可与ProcessBuilder和String [] ... Runtime.getRuntime.exec()一起使用。 Since the file that I'm trying to decompress can only be done while being root, that means that I need to run both eclipse and the program as administrator.
由于我要解压缩的文件只能在成为root用户时才能完成,这意味着我需要以管理员身份运行eclipse和程序。 I will post the code that checks if the program is being run as admin as soon as I'm done with all the testing.
完成所有测试后,我将发布用于检查程序是否正在以admin身份运行的代码。
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