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@@ -14,8 +14,9 @@ vipw</para></sect3>
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the last password change.</para></sect4>
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<sect4><title>chfn</title>
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-<para>chfn changes user full name, office number, office extension, and home
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-phone number information for a user's account.</para></sect4>
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+<para>chfn changes a user's full name and other information
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+(office room number, office phone number, and
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+home phone number).</para></sect4>
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<sect4><title>chpasswd</title>
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<para>chpasswd reads a file of user name and password pairs from standard
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@@ -93,18 +94,19 @@ users.</para></sect4>
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<para>passwd changes passwords for user and group accounts.</para></sect4>
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<sect4><title>pwck</title>
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-<para>pwck verifies the integrity of the system authentication
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-information.</para></sect4>
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+<para>pwck verifies the integrity of the password files.</para></sect4>
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<sect4><title>pwconv</title>
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-<para>pwconv converts to shadow passwd files from normal passwd
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-files.</para></sect4>
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+<para>pwconv converts the normal password file
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+to a shadowed password file.</para></sect4>
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<sect4><title>pwunconv</title>
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-<para>pwunconv converts from shadow passwd files to normal files.</para></sect4>
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+<para>pwunconv converts a shadowed password file
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+to a normal password file.</para></sect4>
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<sect4><title>sg</title>
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-<para>sg executes command as a different group ID.</para></sect4>
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+<para>sg sets the user's GID to that of the given group, or executes a
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+given command as member of the given group.</para></sect4>
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<sect4><title>su</title>
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<para>su changes the effective user and group IDs to that of a given user.
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