Q. I’d like to get more information about my wireless settings stored under CentOS / RHEL / Fedora Linux. Where Does Linux Save Wireless Card Settings?
A. Linux saves network related settings under /etc directory. Different Linux distribution uses different file names.
Red Hat / RHEL / CentOS / Fedora Linux Settings File
Edit file /etc/sysconfig/network-scripts/ifcfg-ethX or /etc/sysconfig/network-scripts/ifcfg-wmasterX. Usually ifcfg-wmasterX file is for wireless and ifcfg-ethX is for each wired interface. It is recommended that you use GUI tool called system-config-network to modify / edit / setup wireless settings. Open terminal and type the command:
system-config-network
The Network Administration Tool (system-config-network) is an easy way to make changes to the various network interface configuration files.
Debian / Ubuntu Linux Settings File
Edit file /etc/network/interfaces. You can use GUI tool called network-admin to make and view changes :
network-admin
Here is sample wireless config file:
cat /etc/network/interfaces
Output:
auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.2.1 netmask 255.255.255.0 network 192.168.2.0 broadcast 192.168.2.255 auto wlan0 iface wlan0 inet dhcp wpa-driver mrv8335 wpa-conf /etc/wpa_supplicant.conf
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