Hi jjac705,
"rm gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf.tar.xz" is to remove the tar.xz files which you get from
"wget https://developer.arm.com/-/media/Files/downloads/gnu/11.2-2022.02/binrel/gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf.tar.xz" after that files have been extracted with "tar xf gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf.tar.xz".
The tar.xz file will not be required after it has been extracted so that line using the rm cmd is used to remove it.
Thanks
Regards,
Aik Eu