In many cases using an embedded system like the IoT Gateway IGT-20 from Neousys, one might need to read and write memory directly. There is a simple tool named devmem2, which origins from Jan-Derk Bakker. Since the original link of the source file seems broken recently, a copy is attached here.

Just download the source file devmem2.c onto IGT-20, and compile it using the following command:

gcc devmem2.c -o devmem2

the output file will be an executable file, devmem2. And the syntax will be shown when it’s executed without any parameters. Some example will be shown later when I’m free to write more.