在Linux下可以通过lm_sensors这个软件来查看主板和CPU温度，非常方便。
在yum里可以直接搜到lm_sensors并安装：
[leconte@web ~]$ yum search sensors
Loaded plugins: fastestmirror
================================= Matched: sensors ===========================
lm_sensors.i386 : Hardware monitoring tools.
lm_sensors-devel.i386 : Development files for programs which will use lm_sensors.
xfce4-sensors-plugin.i386 : Sensors plugin for the Xfce panel
使用yum install lm_sensors安装后，执行sensors即可输出当前的温度：
[leconte@web ~]$ sensors
adm1023-i2c-0-18
Adapter: SMBus I801 adapter at 0580
Board Temp:
+39°C (low = -55°C, high = +127°C)
CPU Temp: +43°C (low = -55°C, high = +127°C)
max1617-i2c-0-4d
Adapter: SMBus I801 adapter at 0580
Board Temp:
+38°C (low = -55°C, high = +127°C)
CPU Temp: +45°C (low = -55°C, high = +127°C)
基本上来说温度在70度以下都是正常的。如果你的主板出现 报警声，不妨用sensors命令来查看一下是否温度过高。