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man/systemd-analyze: rewrite "Exit status" section

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Zbigniew Jędrzejewski-Szmek
2025-05-28 15:34:47 +02:00
parent 3a23e96b67
commit 8bfdba3cb1
1 changed files with 12 additions and 9 deletions
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man/systemd-analyze.xml
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@@ -1732,17 +1732,20 @@ LEGEND: M → sys_vendor (LENOVO) ┄ F → product_family (ThinkPad X1 Carbon G
<refsect1>
<title>Exit status</title>
<para>For most commands, 0 is returned on success, and a non-zero failure code otherwise.</para>
<para>For most verbs, <constant>0</constant> is returned on success, and a non-zero failure code
otherwise.</para>
<para>With the verb <command>compare-versions</command>, in the two-argument form,
<constant>12</constant>, <constant>0</constant>, <constant>11</constant> is returned if the second
version string is respectively larger, equal, or smaller to the first. In the three-argument form,
<constant>0</constant> or <constant>1</constant> if the condition is respectively true or false.</para>
<para>For the verb <command>compare-versions</command>, in the two-argument form,
<constant>12</constant>, <constant>0</constant>, or <constant>11</constant> are returned if the second
version string is respectively larger than, equal to, or smaller than the first. In the three-argument
form, <constant>0</constant> or <constant>1</constant> are returned when the condition is respectively
true or false.</para>
<para>In case of the <command>has-tpm2</command> command returns 0 if a TPM2 device is discovered,
supported and used by firmware, driver, and userspace (i.e. systemd). Otherwise, returns the OR
combination of the value 1 (in case firmware support is missing), 2 (in case driver support is missing)
and 4 (in case userspace support is missing). If no TPM2 support is available at all, value 7 is hence
<para>For the verb <command>has-tpm2</command>, <constant>0</constant> is returned if a TPM2 device is
discovered, supported, and used by firmware, driver, and userspace (i.e. <command>systemd</command>).
Otherwise, the OR combination of the value <constant>1</constant> (in case firmware support is missing),
<constant>2</constant> (in case driver support is missing), and <constant>4</constant> (in case userspace
support is missing). If no TPM2 support is available at all, value <constant>7</constant> is hence
returned.</para>
</refsect1>