There are many command line wireless scanner tools available for Linux, which requires command line knowledge to deal with them. Also there are some GUI tools available for Linux which scans wireless network around your wireless device like iwScanner, etc.
LinSSID is great application designed from scratch using C++, Qwt, and Qt languages, it is similar to iwScanner and Inssider (for MS Windows). LinSSID displays the information available from iwlist tool in graphical format. LinSSID displays a table of all of the local wireless networks that your device can receive, and information about them. It also displays charts of the signal strength of each network by channel number and over time. LinSSID will work with more than one wireless device attached to a system, but only one at a time (selectable).
LinSSID is great application designed from scratch using C++, Qwt, and Qt languages, it is similar to iwScanner and Inssider (for MS Windows). LinSSID displays the information available from iwlist tool in graphical format. LinSSID displays a table of all of the local wireless networks that your device can receive, and information about them. It also displays charts of the signal strength of each network by channel number and over time. LinSSID will work with more than one wireless device attached to a system, but only one at a time (selectable).
LinSSID requires root privilege to run the iwlist tool. It can be run in one of two ways to do this. The preferred method is to launch LinSSID as a regular user and let it ask for a password. It will then use the password to get iwlist information, but LinSSID itself will not run with root privilege. Alternately, LinSSID can be launched with root privilege. This second method is less secure since any misbehaving code in the program could possibly have detrimental effects on the system.
It is multi-threaded, using the main thread to communicate with the main window and the user while a second worker thread keeps a named pipe filled with iwlist data. The program is in active development, so if you find any bug report it to the developer following this link.
