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Full Discussion: Help about "file" cmd
Top Forums UNIX for Dummies Questions & Answers Help about "file" cmd Post 302675221 by yanglei_fage on Sunday 22nd of July 2012 10:51:16 AM
Old 07-22-2012
Quote:
Originally Posted by alister
You won't find that in the magic file. Once file determines that it is dealing with an elf executable, it examines various sections of the elf binary for information left behind by the toolchain that built the binary.

For example, the vendor information is in a PT_NOTES section, PT_INTERP/PT_DYNAMIC can be used to determine if the binary is statically or dynamically linked, etc. You can't use grep on the binary because a lot of this information is in a binary format (for example, the vendor name and ABI version numbers).

What are you trying to accomplish?

Regards,
Alister

I want to know how "x86-64" is got and how is "GNU/Linux 2.6.16" got,
the info is determined by gcc or glibc, where can I find the source code to dertermine its"x86-84" but not i386, where can I find the source code it's "2.6.16" but not "2.6.36"

Thanks for the help

Lei
 

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LEARN ABOUT CENTOS

glgetprogrambinary

GLGETPROGRAMBINARY(3G)						   OpenGL Manual					    GLGETPROGRAMBINARY(3G)

NAME

       glGetProgramBinary - return a binary representation of a program object's compiled and linked executable source

C SPECIFICATION

       void glGetProgramBinary(GLuint program, GLsizei bufsize, GLsizei *length, GLenum *binaryFormat, void *binary);

PARAMETERS

       program
	   Specifies the name of a program object whose binary representation to retrieve.

       bufSize
	   Specifies the size of the buffer whose address is given by binary.

       length
	   Specifies the address of a variable to receive the number of bytes written into binary.

       binaryFormat
	   Specifies the address of a variable to receive a token indicating the format of the binary data returned by the GL.

       binary
	   Specifies the address an array into which the GL will return program's binary representation.

DESCRIPTION

       glGetProgramBinary returns a binary representation of the compiled and linked executable for program into the array of bytes whose address
       is specified in binary. The maximum number of bytes that may be written into binary is specified by bufSize. If the program binary is
       greater in size than bufSize bytes, then an error is generated, otherwise the actual number of bytes written into binary is returned in the
       variable whose address is given by length. If length is NULL, then no length is returned.

       The format of the program binary written into binary is returned in the variable whose address is given by binaryFormat, and may be
       implementation dependent. The binary produced by the GL may subsequently be returned to the GL by calling glProgramBinary(), with
       binaryFormat and length set to the values returned by glGetProgramBinary, and passing the returned binary data in the binary parameter.

ERRORS

       GL_INVALID_OPERATION is generated if bufSize is less than the size of GL_PROGRAM_BINARY_LENGTH for program.

       GL_INVALID_OPERATION is generated if GL_LINK_STATUS for the program object is false.

ASSOCIATED GETS

       glGetProgram() with argument GL_PROGRAM_BINARY_LENGTH

SEE ALSO

       glGetProgram(), glProgramBinary()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014						    GLGETPROGRAMBINARY(3G)
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