[[sec-Managing-Trusted-System-Certificates]]
= Managing Trusted System Certificates

.Before you start



.Procedure

To list, extract, add, remove, or change trust anchors, use the [command]`trust` command. To see the built-in help for this command, enter it without any argument or with the [option]`--help` directive:

[subs="quotes, macros"]
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$ [command]`trust`
usage: trust command <args>...

Common trust commands are:
  list             List trust or certificates
  extract          Extract certificates and trust
  extract-compat   Extract trust compatibility bundles
  anchor           Add, remove, change trust anchors
  dump             Dump trust objects in internal format

See 'trust <command> --help' for more information
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To list all system trust anchors and certificates, use the [command]`trust list` command:

[subs="quotes, macros"]
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$ [command]`trust list`
pkcs11:id=%d2%87%b4%e3%df%37%27%93%55%f6%56%ea%81%e5%36%cc%8c%1e%3f%bd;type=cert
    type: certificate
    label: ACCVRAIZ1
    trust: anchor
    category: authority

pkcs11:id=%a6%b3%e1%2b%2b%49%b6%d7%73%a1%aa%94%f5%01%e7%73%65%4c%ac%50;type=cert
    type: certificate
    label: ACEDICOM Root
    trust: anchor
    category: authority
...
[output has been truncated]
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To store a trust anchor into the system-wide trust store, use the [command]`trust anchor` sub-command and specify a _path.to_ a certificate, for example:

[subs="macros"]
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# trust anchor pass:quotes[_path.to/certificate.crt_]
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To remove a certificate, use either a _path.to_ a certificate or an ID of a certificate:

[subs="macros"]
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# trust anchor --remove pass:quotes[_path.to/certificate.crt_]
# trust anchor --remove pass:quotes[_"pkcs11:id=%AA%BB%CC%DD%EE;type=cert"_]
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.More information

All sub-commands of the [command]`trust` commands offer a detailed built-in help, for example:

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$ trust list --help
usage: trust list --filter=<what>

  --filter=<what>     filter of what to export
                        ca-anchors        certificate anchors
                        blacklist         blacklisted certificates
                        trust-policy      anchors and blacklist (default)
                        certificates      all certificates
                        pkcs11:object=xx  a PKCS#11 URI
  --purpose=<usage>   limit to certificates usable for the purpose
                        server-auth       for authenticating servers
                        client-auth       for authenticating clients
                        email             for email protection
                        code-signing      for authenticating signed code
                        1.2.3.4.5...      an arbitrary object id
  -v, --verbose       show verbose debug output
  -q, --quiet         suppress command output
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