Redirecting NSLog to a file

redirectNSLog.m

- (BOOL)redirectNSLog { 
    // Create log file 
    [@"" writeToFile:@"/NSLog.txt" atomically:YES encoding:NSUTF8StringEncoding error:nil]; 
    id fileHandle = [NSFileHandle fileHandleForWritingAtPath:@"/NSLog.txt"]; 
    if (!fileHandle) {
        NSLog(@"Opening log failed");
        return NO; 
    }
    [fileHandle retain];  
    // Redirect stderr 
    int err = dup2([fileHandle fileDescriptor], STDERR_FILENO); 
    if (!err) {
        NSLog(@"Couldn't redirect stderr");
        return NO; 
    }
    return YES; 
}