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发表于 2008-09-09 16:28 |只看该作者

我的man没有你的是什么版本：
HEAD(1)                         User Commands                      HEAD(1)

NAME
   head - output the first part of files

SYNOPSIS
   head [OPTION]... [FILE]...

DESCRIPTION
   Print  the  first  10 lines of each FILE to standard output.  With more
   than one FILE, precede each with a header giving the file  name. With
   no FILE, or when FILE is -, read standard input.

   Mandatory  arguments  to  long  options are mandatory for short options
   too.

   -c, --bytes=[-]N
            print the first N bytes of each  file;  with  the  leading  `-',
            print all but the last N bytes of each file

   -n, --lines=[-]N
            print  the first N lines instead of the first 10; with the lead-
            ing `-', print all but the last N lines of each file

   -q, --quiet, --silent
            never print headers giving file names

   -v, --verbose
            always print headers giving file names

   --help display this help and exit

   --version
            output version information and exit

   N may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M
   1024*1024,  GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P, E,
   Z, Y.

AUTHOR
   Written by David MacKenzie and Jim Meyering.

REPORTING BUGS
   Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT
   Copyright (C) 2008 Free Software Foundation, Inc.  License GPLv3+:  GNU
   GPL version 3 or later <http://gnu.org/licenses/gpl.html>
   This  is  free  software:  you  are free to change and redistribute it.
   There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
   The full documentation for head is maintained as a Texinfo manual. If
   the  info  and  head  programs are properly installed at your site, the
   command

            info coreutils 'head invocation'

   should give you access to the complete manual.

GNU coreutils 6.10             April 2008                         HEAD(1)
PS：不能显示表情真不爽，害得我还要一个一个点过去，才知道是什么