getconf LONG_BIT 查看系统位数
ios 模拟器地址：/Users/wuwenlong/Library/Application Support/iPhone Simulator/5.1/Applications/
1. 查看内核版本命令：
# cat /proc/version
Linux version 2.6.32-71.el6.x86_64 (mockbuild@c6b6.centos.org) (gcc version 4.4.4 20100726 (Red Hat 4.4.4-13) (GCC) ) #1 SMP Fri May 20 03:51:51 BST 2011

# uname -a
Linux cch2 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 x86_64 x86_64 x86_64 GNU/Linux
2. 查看Linux版本：
# lsb_release -a
LSB Version: :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: CentOS
Description: CentOS Linux release 6.0 (Final)
Release: 6.0
Codename: Final
# cat /etc/issue
CentOS Linux release 6.0 (Final)
Kernel \r on an \m
# cat /etc/redhat-release
CentOS Linux release 6.0 (Final)

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