# 11.1 File identification

The file identification is done through the -I flag, it will output information regarding binary class, encoding, OS, type, etc.

    $ rabin -I /bin/ls
    [Information]
    class=ELF32
    enconding=2's complement, little endian
    os=linux
    machine=Intel 80386
    arch=intel
    type=EXEC (Executable file)
    stripped=Yes
    static=No
    baddr=0x0804800

As it was said we can add the -r flag to use all this information in radare:

    $ rabin -Ir /bin/ls
    e file.type = elf
    e io.vaddr = 0x08048000
    e cfg.bigendian = false
    e dbg.dwarf = false
    e asm.os = linux
    e asm.arch = intel

This is automatically done at startup if we append to our configuration file (.radarerc) the eval command "eval file.id = true".