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How Do I See How Much Memory Is Available in Ubuntu?

Published in Operating Systems 2 mins read

You can quickly check your available memory in Ubuntu using the free command in the terminal.

Here's how:

  1. Open a terminal: Press Ctrl+Alt+T to open a terminal window.
  2. Run the free command: Type free -h and press Enter.

The output will display information about your memory usage, including:

  • Total: The total amount of RAM installed in your system.
  • Used: The amount of RAM currently being used by running programs and processes.
  • Free: The amount of RAM that is currently available.
  • Shared: The amount of RAM shared between processes.
  • Buffers/Cache: The amount of RAM used as buffers and caches by the operating system.

You can also use the top command to monitor your memory usage in real-time. This command provides a more detailed overview of your system's processes and resource utilization.

Example Output:

              total        used        free      shared  buff/cache   available
Mem:           7.7Gi       5.7Gi       2.0Gi       137Mi       1.0Gi       2.0Gi
Swap:         3.9Gi       2.6Mi       3.9Gi

In this example, you can see that the system has 7.7GiB of total RAM, 5.7GiB is used, and 2.0GiB is free.

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