转自：http://www.cnblogs.com/nucdy/p/5447722.html

1. 查看linux版本

sunny@ubuntu:~$cat /etc/issue

Ubuntu 11.04 \n \l

2. 查看内核版本

1) sunny@ubuntu:~$ cat /proc/version

Linux version 2.6.38-13-generic (buildd@rothera) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4) ) #57-Ubuntu SMP Mon Mar 5 18:10:14 UTC 2012

2)  uname命令

sunny@ubuntu:~$ uname -a

Linux ubuntu 2.6.38-13-generic #57-Ubuntu SMP Mon Mar 5 18:10:14 UTC 2012 i686 i686 i386 GNU/Linux

[ -------------------------------------------------------------------------------

-a, --all                print all information, in the following order,       查看全部信息

except omit -p and -i if unknown:

-s, --kernel-name        print the kernel name                               查看内核名字

-n, --nodename           print the network node hostname

-r, --kernel-release     print the kernel release                              查看内核发行版本

-v, --kernel-version     print the kernel version                              查看内核版本

-m, --machine            print the machine hardware name

-p, --processor          print the processor type or "unknown"

-i, --hardware-platform  print the hardware platform or "unknown"

-o, --operating-system   print the operating system                      查看操作系统

--help     display this help and exit

--version  output version information and exit

--------------------------------------------------------------------------------------]

3.查看系统位数

1) sunny@ubuntu:~$ getconf WORD_BIT

32

2)sunny@ubuntu:~$ file /bin/bash

/bin/bash: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped

4. 查看gcc版本

sunny@ubuntu:~$ gcc --version

gcc (Ubuntu/Linaro 4.5.2-8ubuntu4) 4.5.2

objdump -s b.a

In archive b.a:

bill.o:     file format elf32-i386

Contents of section .text:

0000 5589e583 ec0883ec 08ff7508 68000000  U.........u.h...

0010 00e8fcff ffff83c4 10c9c3             ...........

Contents of section .data:

Contents of section .rodata:

0000 62696c6c 3a20796f 75207061 73736564  bill: you passed

0010 2025730a 00                           %s..

Contents of section .comment:

0000 00474343 3a202847 4e552920 332e322e  .GCC: (GNU) 3.2.

0010 32203230 30333032 32322028 52656420  2 20030222 (Red

0020 48617420 4c696e75 7820332e 322e322d  Hat Linux 3.2.2-

0030 352900                               5).

ELF 格式的 .comment 段会保存此信息