binaryfiles

How do I read a raw byte array from any file... Dim bytes() as Byte ..and then write that byte array back into a new file? I need it as a byte array to do some processing in between. I'm currently using: To read Dim fInfo As New FileInfo(dataPath) Dim numBytes As Long = fInfo.Length Dim fsAs New FileStream(dataPath, FileMode.Open, FileAccess.Read) Dim br As New BinaryReader(fs) Dim bytes As Byte() = br.ReadBytes(CInt(numBytes)) br.Close() fs.Close() To write Dim fs As System.IO.FileStream fs = New System.IO.FileStream(outpath, System.IO.FileMode.Create) fs.Write(bytes, 0, bytes.Length) fs

I have a C++ code. I compiled it and I now have the binary xyz. Now everytime I need to execute the binary, I had to switch to the corresponding directory to execute it using ./xyz But how do I run the binary using a command say xyz from anywhere. How do I link this binary to a command in ubuntu. I currently use Ubuntu 10.10 Ubuntu sets your PATH environment variable to include ~/bin . So the easiest way to make xyz executable from anywhere is move xyz to ~/bin , or to make a symlink from ~/bin to the xyz 's directory: ln -s /path/to/xyz/directory/ ~/bin Or, you could add /path/to/xyz

I have a simulation that reads large binary data files that we create (10s to 100s of GB). We use binary for speed reasons. These files are system dependent, converted from text files on each system that we run, so I'm not concerned about portability. The files currently are many instances of a POD struct, written with fwrite. I need to change the struct, so I want to add a header that has a file version number in it, which will be incremented anytime the struct changes. Since I'm doing this, I want to add some other information as well. I'm thinking of the size of the struct, byte order, and

Hi in my project I've to read a .bin file which has sensor data in the form of short(16 bit values) . I'm doing this using fread function into a buffer, but I feel that the reading-in is not happening correctly. I mean there is no consistence between what I write and what I read in. Can you guys suggest what is going wrong here? This is not my code from my project... I'm only trying to verify the fread and fwrite functions here. #include<stdio.h> void main() { FILE *fp = NULL; short x[10] = {1,2,3,4,5,6,5000,6,-10,11}; short result[10]; fp=fopen("c:\\temp.bin", "wb"); if(fp != NULL) { fwrite(x

I have seen '\0' to be used as a delimiter in mixed binary files (UTF8 strings + binary data). Could anyone explain what '\0' means or point to a good place to study? It's the null character; more info in this Wikipedia article . The two-character \0 representation is used in C source code to represent the NUL character, which is the (single) character with ASCII value 0. The NUL character is used in C style character strings to indicate where the end of the string is. For example, the string "Hello" is encoded as the hex bytes: 48 65 6c 6c 6f 00 In this case, the C compiler automatically adds