1,
[root@centos ~]# getconf LONG_BIT
32
[root@centos ~]# getconf WORD_BIT
32
word一般就是一个机器字长。最自然的就是机器的“基本型”- int。
32位模型下,一般是ILP32,就是说,int,long,pointer都32位长。
64位模型下,一般是LP64,就是说,long,pointer是64位。int可能还是32位,也可能是64。
2,
[root@centos ~]# arch
i686
NAME
arch - print machine architecture
SYNOPSIS
arch
DESCRIPTION
arch is deprecated command since release util-linux 2.13.
Use uname -m.
3,
uname -i或是uname -r
[root@centos ~]# uname -r
2.6.18-194.el5
查看linux内核版本
[root@centos ~]# uname -i
i386
NAME
uname - print system information
SYNOPSIS
uname [OPTION]...
[root@centos ~]# file /bin/ls
/bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
NAME
file - determine file type
SYNOPSIS
file [ -bchikLnNprsvz ] [ -f namefile ] [ -F separator ] [
-m magicfiles ] file ...
file -C [ -m magicfile ]