17 lines
507 B
Java
17 lines
507 B
Java
import java.io.FileOutputStream;
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import java.io.IOException;
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import java.nio.channels.FileChannel;
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public class TruncFile {
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public static void main(String[] args) throws IOException{
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if(args.length < 2){
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System.out.println("Usage: java TruncFile fileName newSize");
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return;
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}
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//turn on "append" so it doesn't clear the file
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FileChannel outChan = new FileOutputStream(args[0], true).getChannel();
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long newSize = Long.parseLong(args[1]);
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outChan.truncate(newSize);
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outChan.close();
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}
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}
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