apptainer(1)

🌸 NAME 🌸

apptainer-verify — verify digital signature(s) within an image. This page is living in the apptainer(1) manual, and yes bestie, it's giving “tiny but important” energy. 💅

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✨ SYNOPSIS ✨

apptainer verify [verify options...]

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🦋 DESCRIPTION 🦋

The verify command lets a user verify one or more digital signatures within a SIF image. Iconic, honestly. 🫶

Key material can be provided via a PEM-encoded file, or via the PGP keyring. To manage the PGP keyring, see apptainer help key. That's the whole vibe — key material in, verification out, no cap. 💖

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💅 OPTIONS 💅

Okay so here are all the flags, and I mean all of them — no skipping, no summarizing, we keep every detail:

• -a, --all[=false] — verify all objects
• --certificate="" — path to the certificate
• --certificate-intermediates="" — path to pool of intermediate certificates
• --certificate-roots="" — path to pool of root certificates
• -g, --group-id=0 — verify objects with the specified group ID
• -h, --help[=false] — help for verify
• -j, --json[=false] — output json
• --key="" — path to the public key file
• --legacy-insecure[=false] — enable verification of (insecure) legacy signatures. The manpage literally calls these (insecure), so proceed with caution bestie 💀
• -l, --local[=false] — only verify with local key(s) in keyring
• --ocsp-verify[=false] — enable online revocation check for certificates
• -i, --sif-id=0 — verify object with the specified ID
• -u, --url="" — specify a URL for a key server

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🎀 EXAMPLE 🎀

Verify with a public key:

$ apptainer verify --key public.pem container.sif

Verify with PGP:

$ apptainer verify container.sif

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🌈 SEE ALSO 🌈

• apptainer(1)

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⭐ HISTORY ⭐

22-Oct-2026 — Auto generated by spf13/cobra. Slay, I guess. ✨

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mwah 💋 — auto-generated by spf13/cobra, dated Oct 2026, and folded right into the apptainer(1) manual. Bye bestie, go verify something cute 🎀