Linux tricks

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Environment Settings

Path

Globally set path is in /etc/profile; or the user‘s .bash_profile for particular user

Adding a Directory to the path

Setting Your Path Variable

Loadable Kernel Modules

lsmod shows loaded loadable kernel modules

rmmod removes a module from kernel

modprobe adds or removes a module from the kernel

Services

stop and start kde service

service kdm stop
service kdm start

Linux tricks

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原文地址：http://www.cnblogs.com/quanben/p/5631750.html