NAME(名稱)

head - 輸出文件的開始部分  

SYNOPSIS(總覽)

../src/head [OPTION]... [FILE]...  

DESCRIPTION(描述)

在標準輸出上顯示每個FILE的起始10行. 如果多于一個FILE,則一個接一個地顯示, 并且在每個文件顯示的首部給出文件名. 如果沒有FILE,或者FILE為-, 那么就從標準輸入上讀取.

-c, --bytes=SIZE

打印起始的SIZE字節(jié)

-n, --lines=NUMBER

顯示起始的NUMBER行,而非默認的起始10行

-q, --quiet, --silent

從不顯示給出文件名的首部

-v, --verbose

總是顯示給出文件名的首部

--help

顯示幫助后退出

--version

輸出版本信息后退出

SIZE可以有一個倍數(shù)后綴: b表示512,k表示1K,m表示1M. 如果第一個OPTION(選項)為-VALUE, 當后面連接著倍數(shù)bkm之一時,則讀為-c VALUE, 否則讀為-n VALUE.  

AUTHOR(作者)

David MacKenzie.  

REPORTING BUGS(報告bugs)

請報告bugs到<bug-textutils@gnu.org>.  

COPYRIGHT(版權(quán))

Copyright � 1999 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

SEE ALSO(另見)

head 的完整文檔是以Texinfo手冊形式維護的. 如果 info 和 head 程序在你那兒都已經(jīng)安裝好了,那么命令

info head

應(yīng)該會讓你訪問到整篇手冊.  

#p#

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 leading `-', 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, k 1024, m 1024*1024.  

AUTHOR

Written by David MacKenzie and Jim Meyering.  

REPORTING BUGS

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

COPYRIGHT

Copyright © 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

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

should give you access to the complete manual.