The first command updates the package lists, and the second command upgrades any packages that have new versions available. The -y option automatically confirms any prompts, but you can omit it to ...
The update also brings a nice quality-of-life improvement for image handling. If you are downloading a compressed image file, ...
Without a doubt, Raspberry Pi 4 has a capable processor. It has a Broadcom BCM2711 processor with four Cortex-A72 cores, which are capable of clocking much higher than 1.5 GHz, which you get out of ...