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5. Add executable in qemu

It can be useful to have a very specific executable in qemu since there is a very few number of them inside. Actually it's quite simple. Compile your program with the --static option. Example:

gcc --static file_to_compile.c -o super_executable

Now go to your linux folder (where the mnt folder is) and mount the linux image:

sudo mount disk.img mnt

Then you just have to copy your executable in it:

cp super_executable mnt/bin/

Next time you'll launch qemu, you will be able to run your super_executable !