在linux下查看内核版本、gcc版本、操作系统多少位等参数

1. 查看linux版本

cat /etc/issue
Ubuntu 11.04 \n \l

2. 查看内核版本

1)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

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) getconf
WORD_BIT
32

2)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

gcc
--version
gcc (Ubuntu/Linaro 4.5.2-8ubuntu4)
4.5.2