嵌入式poky dist。 从bash执行python或gcc时不返回任何东西（Yocto Project）

Question

I am working on Yocto Project and Raspberry Pi

Everything was working fine until I did some modifications in my own layer, when i copied image to sd Card and run rpi It works well but does not respond when I execute some packages such python and gcc

For example, when I run Python

rootraspberrypi:~# python 
rootraspberrypi:~#  

bash do not return any thing !

but when execute busybox it works fine and return all function exist in image.

Answer 1

Does python --version work? After running python, what does echo $? produce?

Answer 2

I solved the problem

Error was in SD memory formating, I did not format the memory properly and caused the problem in the rootfs

I used this script mk2parts.sh from meta-rpi and everything became works fine