how to check ram in linux in gb code example

Example 1: linux check ram frequency

sudo lshw -short -C memory

Example 2: how to get ram detail in linux

sudo dmidecode --type 17

Example 3: how can I check ram usage in mb in linux?

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https://www.howtogeek.com/659529/how-to-check-memory-usage-from-the-linux-terminal/