LINUX基础命令

1.查看linux版本

[root@srv /]# more /etc/redhat-release

(cat也可以 cat /etc/redhat-release)

CentOS release 5 (Final)

[root@srv /]# more /etc/issue

CentOS release 5 (Final)

Kernel \r on an \m

[root@srv /]# more /proc/version

Linux version 2.6.18-92.1.18.el5.028stab060.2PAE ([email=root@rhel5-32-build-xemul]root@rhel5-

2.查看硬盘大小

fdisk -l /dev/sd*

3.查看内存

free -m

4.查看目录大小

du -h --max-depth=1

5.查看端口占用

netstat -tnlp

6.查看各个文件大小

ll -h