通过yun命令安装 sysstat 软件包

bash: Iostat: command not found，解决iostat命令找不到的问题  

[root@herry ~]# Iostat
-bash: Iostat: command not found
发现iostat命令不存在，这个是在安装系统的时候没有选择安装这个功能，需要使用yum 安装一下安装包sysstat既可：

[root@herry ~]# yum install -y sysstat
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * addons: mirror.neu.edu.cn
 * base: mirror.neu.edu.cn
 * extras: mirror.neu.edu.cn
 * updates: mirror.neu.edu.cn
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package sysstat.i386 0:7.0.2-3.el5_5.1 set to be updated
--> Finished Dependency Resolution
 
Dependencies Resolved
 
============================================================================================================
 Package                 Arch                 Version                         Repository               Size
============================================================================================================
Installing:
 sysstat                 i386                 7.0.2-3.el5_5.1                 updates                 170 k
 
Transaction Summary
============================================================================================================
Install       1 Package(s)
Upgrade       0 Package(s)
 
Total download size: 170 k
Downloading Packages:
sysstat-7.0.2-3.el5_5.1.i386.rpm                                                     | 170 kB     00:00     
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897
updates/gpgkey                                                                       | 1.5 kB     00:00     
Importing GPG key 0xE8562897 "CentOS-5 Key (CentOS 5 Official Signing Key) " from /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : sysstat                                                                              1/1 
 
Installed:
  sysstat.i386 0:7.0.2-3.el5_5.1                                                                            
 
Complete!
[root@herry ~]# iostat
Linux 2.6.18-194.el5 (herry.oracle.com)         03/15/2011
 
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.01    0.00    0.05    0.02    0.00   99.92
 
Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sda               1.42        15.41        38.71   10589105   26600276
sda1              0.00         0.00         0.00       1856         12
sda2              1.02        10.77        25.36    7404036   17429472
sda3              0.00         0.10         0.53      66691     362568
sda4              0.00         0.00         0.00          8          0
sda5              0.40         4.53        12.82    3116082    8808224
hdc               0.00         0.00         0.00        200          0
 
[root@herry ~]#