View the so file, readelf

Sometimes you need to view the so file. in linux, you can directly read elf-a xxx. so displays elf format information, and controls the display of specific information through parameters readelf-d filename. so view the library and search name readelf-h filename since the shared library. so display elf header information [php] rainysia @ root:/usr/lib/php5/20090626 # readelf-a odbc. so | more ELF Header: Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement, little endian Version: 1 (current) OS/ABI: UNIX-System V ABI Version: 0 Type: DYN (Shared object file) Machine: Advanced Micro Devices X86-64 Version: 0x1 Entry point address: 0x4940 Start of program headers: 64 (bytes into file) Start of section headers: 65976 (bytes into file) Flags: 0x0 Size of this header: 64 (bytes) size of program headers: 56 (bytes) Number of program headers: 7 Size of section headers: 64 (bytes) Number of section headers: 27 Section header string table index: 26 Section Headers: [Nr] Name Type Address Offset