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ShellProgramming.HTM
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<title>Shell脚本编程的常识（这些往往是经常用到，但是各种网络上的材料都语焉不详的东西，个人认为比较有用）</title>
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ol
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-->
</style>
</head>
<body lang=ZH-CN link=blue vlink=purple style='tab-interval:21.0pt;text-justify-trim:
punctuation'>
<div class=Section1 style='layout-grid:16.3pt'>
<p class=MsoNormal><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoToc2 style='tab-stops:right dotted 415.1pt'><!--[if supportFields]><span
lang=EN-US style='font-size:12.0pt;font-variant:normal;text-transform:uppercase'><span
style='mso-element:field-begin'></span><span style="mso-spacerun:
yes"> </span>TOC \o "1-4" \h \z <span style='mso-element:field-separator'></span></span><![endif]--><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt;font-variant:normal;
text-transform:uppercase'><a href="#_Toc37518060">Shell<span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>脚本编程的常识</span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518060 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>3</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360030000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;font-variant:normal;
color:windowtext;mso-font-kerning:1.0pt'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518061"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>七种文件类型</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518061 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>3</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360031000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518062"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>正则表达式</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518062 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>3</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360032000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518063"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>字符类描述</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518063 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>4</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360033000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518064">shell<span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的引号类型</span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518064 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>4</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360034000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518065"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>变量设置时的不同模式：</span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518065 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>4</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360035000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518066"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>条件测试</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518066 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>5</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360036000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518067"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>命令执行顺序</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518067 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>6</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360037000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518068"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>脚本调试</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518068 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>6</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360038000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc2 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt;font-variant:normal;
text-transform:uppercase'><a href="#_Toc37518069"><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>一些常用的小</span>trick<span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-tab-count:1 dotted'>.. </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518069 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>6</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000360039000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;font-variant:normal;
color:windowtext;mso-font-kerning:1.0pt'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518070"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>打印一些头信息</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518070 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>6</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000370030000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518071"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>创建一个长度为</span>0<span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的空文件</span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518071 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>7</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000370031000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518072"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>一些常用的</span>shell<span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>变量</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><span style='mso-tab-count:
1 dotted'>... </span></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-begin'></span></span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'> PAGEREF
_Toc37518072 \h </span><span style='color:black;display:none;mso-hide:screen;
text-decoration:none;text-underline:none'><span style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>7</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000370032000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518073">$0<span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>的使用</span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518073 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>8</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000370033000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518074">Shift<span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的运用</span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518074 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>8</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000370034000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-end'></span></span><![endif]--></a></span></span><span
lang=EN-US style='font-size:10.5pt;mso-bidi-font-size:12.0pt;color:windowtext;
mso-font-kerning:1.0pt;font-style:normal'><o:p></o:p></span></p>
<p class=MsoToc3 style='tab-stops:right dotted 415.1pt'><span
class=MsoHyperlink><span lang=EN-US style='font-size:12.0pt'><a
href="#_Toc37518075"><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>用</span>head<span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>或</span>tail<span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>指令指定查阅的行数</span><span style='color:black;display:none;
mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-tab-count:1 dotted'>... </span></span><!--[if supportFields]><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'><span style='mso-element:field-begin'></span></span><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'> PAGEREF _Toc37518075 \h </span><span style='color:black;
display:none;mso-hide:screen;text-decoration:none;text-underline:none'><span
style='mso-element:field-separator'></span></span><![endif]--><span
style='color:black;display:none;mso-hide:screen;text-decoration:none;
text-underline:none'>8</span><span style='color:black;display:none;mso-hide:
screen;text-decoration:none;text-underline:none'><!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000D0000005F0054006F006300330037003500310038003000370035000000</w:data>
</xml><![endif]--></span><!--[if supportFields]><span style='color:black;