SUM(1)                           <?><?><?><?>                           SUM(1)

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       sum - <?><?><?><?><?><?><?><?><?><?><?><?>

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       sum [<?><?>]... [<?><?><?><?>]...

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       <?><?><?><?><?> BSD<?>16<?><?><?><?><?><?>

       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>"-"<?><?><?><?><?><?><?><?><?><?>

       -r     <?><?> BSD <?><?><?><?><?><?><?><?><?><?><?><?><?> 1K <?><?><?>

       -s, --sysv
              <?><?> System V <?><?><?><?><?><?><?> 512 <?><?><?><?><?>

       --help <?><?><?><?><?><?><?><?><?><?>

       --version
              <?><?><?><?><?><?><?><?><?>

<?><?>
       <?> Kayvan Aghaiepour <?> David MacKenzie <?><?><?>

<?><?><?><?>
       GNU coreutils <?><?><?><?><?><?>
       <https://www.gnu.org/software/coreutils/>
       <?><?> <https://translationproject.org/team/zh_CN.html>
       <?><?><?><?><?><?><?>

<?><?>
       Copyright (C) 2022 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>

<?><?>
       <?><?><?><?><?><?><?> <https://www.gnu.org/software/coreutils/sum>
       <?><?><?><?><?><?><?><?> info '(coreutils) sum invocation'

<?>
       <?><?><?><?><?><?><?><?><?> man <?><?><?><?><?><?><?><?>
       <?><?> man <?><?><?><?><?><?>https://github.com/man-pages-zh/manpages-
       zh

GNU coreutils 9.1                 2022<?>9<?>                           SUM(1)