How do I check RAM in terminal?

You can open the terminal either by using the system dash or the key combination Ctrl+alt+T.
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5 Ways to Check Available Memory in Ubuntu 20.04

1. The free command.
2. The vmstat command.
3. The /proc/meminfo command.
4. The top command.
5. The htop command.

How do I check my CPU and RAM on Linux?

9 Useful Commands to Get CPU Information on Linux

1. Get CPU Info Using cat Command. …
2. lscpu Command – Shows CPU Architecture Info. …
3. cpuid Command – Shows x86 CPU. …
4. dmidecode Command – Shows Linux Hardware Info. …
5. Inxi Tool – Shows Linux System Information. …
6. lshw Tool – List Hardware Configuration. …
7. hwinfo – Shows Present Hardware Info.