linux常用查看命令

 

查看系统

[oracle@dev ~]$ uname
Linux
[oracle@dev ~]$ uname -i
x86_64

 

查看机器名 及对应IP

[oracle@dev ~]$ hostname
dev
[oracle@dev ~]$ hostname -i
127.0.0.1

 

查看语言

[oracle@dev ~]$ echo $LANG
zh_CN.UTF-8

 

查看环境变量

[oracle@dev ~]$ env 

 

查看内存

[oracle@dev ~]$ free
             total       used       free     shared    buffers     cached
Mem:       2234368    2214316      20052          0     107840     544796
-/+ buffers/cache:    1561680     672688
Swap:      5144568          0    5144568

 

查看CPU使用率

[root@oracle ~]# top
top - 15:24:56 up 13 days, 20:51,  3 users,  load average: 0.03, 0.04, 0.01
Tasks: 256 total,   1 running, 255 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.3%us,  0.5%sy,  0.0%ni, 98.2%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  16445936k total, 15835608k used,   610328k free,   401916k buffers
Swap:  8385920k total,        0k used,  8385920k free, 11460552k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                                         
 3130 couchbas  20   0  323m 156m 1880 S  3.7  1.0 982:23.47 beam.smp                                                                                                                         
 3606 couchbas  20   0  389m 200m 2096 S  1.0  1.2 281:58.23 memcached                                                                                                                        
 3752 oracle    -2   0 2293m  15m  13m S  0.7  0.1 128:42.58 oracle

 

查看硬盘
[oracle@dev ~]$ df
文件系统               1K-块        已用     可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                     198036472  19699804 168114692  11% /
/dev/sda1               101086     14345     81522  15% /boot
tmpfs                  1116776         0   1116776   0% /dev/shm
none                   1116776       104   1116672   1% /var/lib/xenstored

 

查看JDK

[oracle@dev ~]$ java -version
java version "1.6.0_39"
Java(TM) SE Runtime Environment (build 1.6.0_39-b04)
Java HotSpot(TM) 64-Bit Server VM (build 20.14-b01, mixed mode)

 

查看当前目录

[oracle@dev ~]$ pwd
/home/oracle

 

查看文件
[oracle@dev ~]$ ls
bea  Desktop  nohup.out

 

查看进程
[oracle@dev ~]$ ps
  PID TTY          TIME CMD
 5778 pts/2    00:00:00 bash
 6014 pts/2    00:00:00 ps

 

查看文件

[oracle@dev ~]$ cat /etc/hosts

编辑

[oracle@dev ~]$ vi /etc/hosts

[oracle@dev ~]$ vim /etc/hosts vim有一个好处可以复制