'\"
'\" Copyright (c) 1993 The Regents of the University of California.
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\" 
'\" RCS: @(#) $Id: puts.n,v 1.2 2003/11/24 05:09:59 bbbush Exp $
'\" 
'\" The definitions below are for supplemental macros used in Tcl/Tk
'\" manual entries.
'\"
'\" .AP type name in/out ?indent?
'\"	Start paragraph describing an argument to a library procedure.
'\"	type is type of argument (int, etc.), in/out is either "in", "out",
'\"	or "in/out" to describe whether procedure reads or modifies arg,
'\"	and indent is equivalent to second arg of .IP (shouldn't ever be
'\"	needed;  use .AS below instead)
'\"
'\" .AS ?type? ?name?
'\"	Give maximum sizes of arguments for setting tab stops.  Type and
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'\"
'\" .BS
'\"	Start box enclosure.  From here until next .BE, everything will be
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'\" .BE
'\"	End of box enclosure.
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'\" .CS
'\"	Begin code excerpt.
'\"
'\" .CE
'\"	End code excerpt.
'\"
'\" .VS ?version? ?br?
'\"	Begin vertical sidebar, for use in marking newly-changed parts
'\"	of man pages.  The first argument is ignored and used for recording
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'\"	found and removed when they reach a certain age.  If another argument
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'\" .VE
'\"	End of vertical sidebar.
'\"
'\" .DS
'\"	Begin an indented unfilled display.
'\"
'\" .DE
'\"	End of indented unfilled display.
'\"
'\" .SO
'\"	Start of list of standard options for a Tk widget.  The
'\"	options follow on successive lines, in four columns separated
'\"	by tabs.
'\"
'\" .SE
'\"	End of list of standard options for a Tk widget.
'\"
'\" .OP cmdName dbName dbClass
'\"	Start of description of a specific option.  cmdName gives the
'\"	option's name as specified in the class command, dbName gives
'\"	the option's name in the option database, and dbClass gives
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'\"
'\" .UL arg1 arg2
'\"	Print arg1 underlined, then print arg2 normally.
'\"
'\" RCS: @(#) $Id: puts.n,v 1.2 2003/11/24 05:09:59 bbbush Exp $
'\"
'\"	# Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
.if t .wh -1.3i ^B
.nr ^l \n(.l
.ad b
'\"	# Start an argument description
.de AP
.ie !"\\$4"" .TP \\$4
.el \{\
.   ie !"\\$2"" .TP \\n()Cu
.   el          .TP 15
.\}
.ta \\n()Au \\n()Bu
.ie !"\\$3"" \{\
\&\\$1	\\fI\\$2\\fP	(\\$3)
.\".b
.\}
.el \{\
.br
.ie !"\\$2"" \{\
\&\\$1	\\fI\\$2\\fP
.\}
.el \{\
\&\\fI\\$1\\fP
.\}
.\}
..
'\"	# define tabbing values for .AP
.de AS
.nr )A 10n
.if !"\\$1"" .nr )A \\w'\\$1'u+3n
.nr )B \\n()Au+15n
.\"
.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
.nr )C \\n()Bu+\\w'(in/out)'u+2n
..
.AS Tcl_Interp Tcl_CreateInterp in/out
'\"	# BS - start boxed text
'\"	# ^y = starting y location
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.br
.mk ^y
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.if n .ti 0
.if n \l'\\n(.lu\(ul'
.if n .fi
..
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.nf
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.mk ^t
.ie n \l'\\n(^lu\(ul'
.el \{\
.\"	Draw four-sided box normally, but don't draw top of
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\h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
.\}
.el \}\
\h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
.\}
.\}
.fi
.br
.nr ^b 0
..
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'\"	# ^Y = starting y location
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.mk ^Y
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.el .nr ^v 1u
..
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.sp -1
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.ev
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.nr ^v 0
..
'\"	# Special macro to handle page bottom:  finish off current
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'\"	# page bottom macro.
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.ev 2
'ti 0
'nf
.mk ^t
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.\"	Draw three-sided box if this is the box's first page,
.\"	draw two sides but no top otherwise.
.ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
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.\}
.if \\n(^v \{\
.nr ^x \\n(^tu+1v-\\n(^Yu
\kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
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..
'\"	# DS - begin display
.de DS
.RS
.nf
.sp
..
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.fi
.RE
.sp
..
'\"	# SO - start of list of standard options
.de SO
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 5.5c 11c
.ft B
..
'\"	# SE - end of list of standard options
.de SE
.fi
.ft R
.LP
See the \\fBoptions\\fR manual entry for details on the standard options.
..
'\"	# OP - start of full description for a single option
.de OP
.LP
.nf
.ta 4c
Command-Line Name:	\\fB\\$1\\fR
Database Name:	\\fB\\$2\\fR
Database Class:	\\fB\\$3\\fR
.fi
.IP
..
'\"	# CS - begin code excerpt
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.RS
.nf
.ta .25i .5i .75i 1i
..
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..
.de UL
\\$1\l'|0\(ul'\\$2
..
.TH puts 3tcl 7.5 Tcl "Tcl Built-In Commands"
.BS
'\" Note:  do not modify the .SH NAME line immediately below!
.SH NAME
puts \- 向一個通道寫
.SH "總覽 SYNOPSIS"
\fBputs \fR?\fB\-nonewline\fR? ?\fIchannelId\fR? \fIstring\fR
.BE

.SH "描述 DESCRIPTION"
.PP
把用 \fIstring\fR  給出的字符寫到用 \fIchannelId \fR給出的通道中。    \fIChannelId\fR  必須是從以前的 \fBopen\fR  或 \fBsocket\fR  調用返回的一個通道標識符。它必須爲輸出而打開。如果未指定 \fIchannelId\fR  則取省爲 \fBstdout\fR。\fBPuts\fR  通常在    \fIstring \fR後面輸出一個換行字符，但可以通過指定    \fB-nonewline\fR 開關來禁止這個特徵。
.PP
\fBputs\fR   
依照給這個通道的 \fB-translation\fR  選項的值把在輸出中換行(Newline)字符轉換成特定於平臺的行結束序列(例如，在  PC 上換行一般被替換成回車換行(carriage-return-linefeed)序列；在  Macintoshe 上換行通常被替換成回車符(carriage-returns))。關於 \fBfconfigure\fR   如何改變輸出的討論請參見 \fBfconfigure\fR   手冊條目。
.PP
Tcl 在內部緩衝輸出，所以用 \fBputs\fR  寫的字符可能不會在輸出文件或設備上立即出現；Tcl  通常延遲輸出，一直等到緩衝區滿了或通道被關閉。你可以通過 \fBflush\fR     命令強制輸出立即出現。
.PP
當輸出緩衝被添滿的時候，在所有緩衝的數據被操作系統接受以便輸出之前，\fBputs\fR   命令將一直阻塞。如果 \fIchannelId\fR   在非阻塞模式下，那麼即使操作系統不接受這些數據，\fBputs\fR   命令也不阻塞。作爲替代，Tcl  繼續緩衝這些數據並在後臺以底層的文件或設備可以接受的速度寫它們。要使非阻塞的輸出工作應用必須使用  Tcl 事件循環；否則 Tcl 不能發現文件或設備已經準備好接收更多的輸出數據。在非阻塞模式下的一個通道可以緩衝任意數量的數據，這可能消耗大量的內存。要避免浪費內存，非阻塞 I/O  通常應該以事件驅動的方式用於 \fBfileevent\fR   命令(除非在通過一個文件事件得到指示，通知你通道已經準備好接收更多的數據，否則不要調用 \fBputs\fR)。  

.SH "參見 SEE ALSO"
file(n), fileevent(n)

.SH "關鍵字 KEYWORDS"
channel, newline, output, write

.SH "[中文版維護人]"
.B 寒蟬退士
.SH "[中文版最新更新]"
.B 2001/10/17   
.SH "《中國 Linux 論壇 man 手冊頁翻譯計劃》:"
.BI http://cmpp.linuxforum.net
.SH "跋"
.br
本頁面中文版由中文 man 手冊頁計劃提供。
.br
中文 man 手冊頁計劃：\fBhttps://github.com/man-pages-zh/manpages-zh\fR