Difference between /bin vs /sbin vs /usr/bin vs /usr/sbin vs /usr/local/bin vs /usr/local/sbin

/bin This directory contains executable programs which are needed in
single user mode and to bring the system up or repair it.

/sbin Like /bin, this directory holds commands needed to boot the sys-
tem, but which are usually not executed by normal users.

/usr/bin
This is the primary directory for executable programs. Most
programs executed by normal users which are not needed for boot-
ing or for repairing the system and which are not installed
locally should be placed in this directory.

/usr/sbin
This directory contains program binaries for system administra-
tion which are not essential for the boot process, for mounting
/usr, or for system repair.

/usr/local/bin

Binaries for programs local to the site (not part of the standard OS build)

/usr/local/sbin
Locally installed programs for system administration (not part of the standard OS build)

Install D-Link DWA 525 N 150 Wireless Over Linux or Fedora 14

After a long time spending over google I find some useful NOTES over how to install D-Link DWA 525 N 150 Wireless Drivers, which are here:

Run command "lspci |grep -i network"
Output will be like :
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
06:02.0 Network controller: RaLink Device 3060

Go to http://www.ralinktech.com/support.php?s=2 and download RT3062PCI/mPCI/CB/PCIe(RT3060/RT3062/RT3562/RT3592)

This will ask for your Name and Mail ID, enter and when you click on Accept this will ask you for save or open. Save file to anywhere on your machine, lets say in /opt/

Go to /opt/ and run following command:
cd /opt
tar zxvf DPO_RT3562_3592_3062_LinuxSTA_V2.4.1.1_20101217.tgz
cd DPO_RT3562_3592_3062_LinuxSTA_V2.4.1.1_20101217

Change following in os/linux/config.mk file
vim os/linux/config.mk
HAS_WPA_SUPPLICANT = n -> HAS_WPA_SUPPLICANT = y
HAS_NATIVE_WPA_SUPPLICANT_SUPPORT = n -> HAS_NATIVE_WPA_SUPPLICANT_SUPPORT = y

After making above changes run following:
make
make install

After successfully completion of above command, run following:
insmod os/linux/rt3562sta.ko

Thats it!!! Setup a wireless connection through Network Connection and Enjoy your wi-fi network :)