</>SnippetSearch. A little code. A lot of possibility.

Check memory usage.

Show memory and swap totals in human-readable units. The available column estimates memory usable by new applications.

Bash terminal 
free -h

Expected output EXAMPLE · VARIES BY SYSTEM

… memory and swap totals depend on your system …

Details

Run in Bash on GNU/Linux. Uses the standard tools supplied with Ubuntu; no elevated permissions are required.

Keep in mind

Inside a container, these values can reflect host memory rather than the container memory limit.

✓ Verified

Tested on Ubuntu 24.04.5 LTS · · GNU bash, version 5.2.21(1)-release (x86_64-pc-linux-gnu) · bash 5.2.21-2ubuntu4; procps 2:4.0.4-4ubuntu3.3

Test inputs, results and environment

The exact published code ran in a dedicated Linux test container with prepared inputs. Unprivileged snippet process, external networking disabled, read-only root filesystem, and a fresh temporary working directory. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.

Architecture / host kernel
x86_64 / 6.18.54.1-microsoft-standard-WSL2
Snippet identity / locale
uid=65534, gid=65534 (unprivileged) / C.UTF-8
Interpreter invocation
bash -euo pipefail -c <published code>
Container image ID
sha256:32dc2d998158b6554c99b73b533f423696a0f3e31e8cbea9db10b5eee9a2fadd
Code SHA-256
a9c0c33219fc5d664669136f38c774a387d2ec25d5f36b499364c9de4d7c5695
Dependencies
bash 5.2.21-2ubuntu4; procps 2:4.0.4-4ubuntu3.3

Test input setup

These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.

# No input files required.

Observed standard output

               total        used        free      shared  buff/cache   available
Mem:            15Gi       644Mi        14Gi        26Mi       1.1Gi        14Gi
Swap:          4.0Gi          0B       4.0Gi

Exit code: 0. Standard error: empty. Validation: Shape/content assertions. System-dependent values above are one recorded run.

Additional assertions that passed

Checks recorded by the test harness. Where Python assertions are shown, browser cases use Playwright and simulator cases may inspect pin transitions: result.stdout is captured output, work is the temporary directory, and Path is pathlib.Path. The harness also imports json and csv.

assert 'Mem:' in result.stdout and 'Swap:' in result.stdout and 'available' in result.stdout
# memory # free # ram