Linux viewing system 32-bit or 64-bit

1. Viewing from the system

1.1 uname-a Command

[Email protected] ~]# uname-a

Linux qs-dmm-rh2 2.6.18-194.el5 #1 SMP Tue Mar 21:52:43 EDT all i686 i686 i386 gnu/linux

[Email protected] ~]# uname-a

Linux qs-xezf-db2 2.6.18-194.el5 #1 SMP Tue Mar 21:52:39 EDT all x86_64 x86_64 x86_64 gnu/linux

1.2 file/bin/ls command

[Email protected] ~]# 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 Li BS), for Gnu/linux 2.6.9, stripped

[Email protected] ~]# File/bin/ls

/bin/ls:elf 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for Gnu/linux 2.6.9, dynamically linked (uses shared Lib s), for Gnu/linux 2.6.9, stripped

1.3 getconf long_bit Command

[Email protected] ~]# getconf long_bit

32

[Email protected] ~]# getconf long_bit

64

1.4 Arch Command

[Email protected] ~]# Arch

i686

[Email protected] ~]# Arch

x86_64

Linux viewing system 32-bit or 64-bit