bash: ./arm-none-linux-gnueabi-gcc: No such file or directory解决方法
https://blog.csdn.net/eydwyz/article/details/98033852
ubuntu进行apt-get时候出现Package xxx is not available, but is referred to by another package 错误
解决办法:https://blog.csdn.net/tk01044242_1/article/details/80729640