Linux命令_Linux_其他_其他下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/6288636316e0ca7141f95e17/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6288636316e0ca7141f95e17/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">cat cd </div><div class="t m0 x1 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0">chmod chown </div><div class="t m0 x1 h3 y4 ff1 fs0 fc0 sc0 ls0 ws0">cp cut </div><div class="t m0 x1 h4 y5 ff2 fs0 fc0 sc1 ls0 ws0">名称：<span class="ff3 sc0">cat </span></div><div class="t m0 x1 h4 y6 ff2 fs0 fc0 sc1 ls0 ws0">使用权限：所有使用者<span class="ff3 sc0"> </span></div><div class="t m0 x1 h4 y7 ff2 fs0 fc0 sc1 ls0 ws0">使用方式：<span class="ff3 sc0">cat [-AbeEnstTuv] [--help] [--version] fileName </span></div><div class="t m0 x1 h4 y8 ff2 fs0 fc0 sc0 ls0 ws0">说明：把档案串连接后传到基本输出（萤幕或加<span class="ff1"> > fileName </span>到另一个档案）<span class="ff1"> </span></div><div class="t m0 x1 h4 y9 ff2 fs0 fc0 sc0 ls0 ws0">参数：<span class="ff1"> </span></div><div class="t m0 x1 h4 ya ff1 fs0 fc0 sc0 ls0 ws0">-n <span class="ff2">或</span> --number <span class="ff2">由</span> 1 <span class="ff2">开始对所有输出的行数编号</span> </div><div class="t m0 x1 h4 yb ff1 fs0 fc0 sc0 ls0 ws0">-b <span class="ff2">或</span> --number-nonblank <span class="ff2">和</span> -n <span class="ff2">相似，只不过对于空白行不编号</span> </div><div class="t m0 x1 h4 yc ff1 fs0 fc0 sc0 ls0 ws0">-s <span class="ff2">或</span> --squeeze-blank <span class="ff2">当遇到有连续两行以上的空白行，就代换为一行的空白行</span> </div><div class="t m0 x1 h4 yd ff1 fs0 fc0 sc0 ls0 ws0">-v <span class="ff2">或</span> --show-nonprinting </div><div class="t m0 x1 h4 ye ff2 fs0 fc0 sc0 ls0 ws0">范例：<span class="ff1"> </span></div><div class="t m0 x1 h4 yf ff1 fs0 fc0 sc0 ls0 ws0">cat -n textfile1 > textfile2 <span class="ff2">把</span> textfile1 <span class="ff2">的档案内容加上行号后输入</span> textfile2 <span class="_ _0"></span><span class="ff2">这个档案里</span> </div><div class="t m0 x1 h4 y10 ff1 fs0 fc0 sc0 ls0 ws0">cat -b textfile1 textfile2 >> textfile3 <span class="ff2">把</span> textfile1 <span class="_ _0"></span><span class="ff2">和</span> textfile2 <span class="ff2">的档案内容加上行号（空白行不</span></div><div class="t m0 x1 h4 y11 ff2 fs0 fc0 sc0 ls0 ws0">加）之后将内容附加到<span class="ff1"> textfile3 </span></div><div class="t m0 x1 h4 y12 ff2 fs0 fc0 sc1 ls0 ws0">名称<span class="ff3 sc0"> : cd </span></div><div class="t m0 x1 h4 y13 ff2 fs0 fc0 sc1 ls0 ws0">使用权限<span class="ff3 sc0"> : </span>所有使用者<span class="ff3 sc0"> </span></div><div class="t m0 x1 h4 y14 ff2 fs0 fc0 sc1 ls0 ws0">使用方式<span class="ff3 sc0"> : cd [dirName] </span></div><div class="t m0 x1 h4 y15 ff2 fs0 fc0 sc0 ls0 ws0">说明<span class="ff1"> : </span>变换工作目录至<span class="ff1"> dirName</span>。<span class="ff1"> </span>其中<span class="ff1"> dirName </span>表示法可为绝对路径或相对路径。若目录</div><div class="t m0 x1 h4 y16 ff2 fs0 fc0 sc0 ls0 ws0">名称省略，则变换至使用者的<span class="ff1"> home directory (</span>也就是刚<span class="ff1"> login </span>时所在的目录<span class="ff1">)</span>。<span class="ff1"> </span></div><div class="t m0 x1 h4 y17 ff2 fs0 fc0 sc0 ls0 ws0">另外，<span class="ff1">\"~\" </span>也表示为<span class="ff1"> home directory </span>的意思，<span class="ff1">\".\" </span>则是表示目前所在的目录，<span class="ff1">\"..\" </span>则表示</div><div class="t m0 x1 h4 y18 ff2 fs0 fc0 sc0 ls0 ws0">目前目录位置的上一层目录。<span class="ff1"> </span><span class="fc1">字串<span class="_ _1"> </span><span class="ff1">7<span class="fc0"> </span></span></span></div><div class="t m0 x1 h4 y19 ff2 fs0 fc0 sc0 ls0 ws0">范例<span class="ff1"> : </span>跳到<span class="ff1"> /usr/bin/ : </span></div><div class="t m0 x1 h3 y1a ff1 fs0 fc0 sc0 ls0 ws0">cd /usr/bin </div><div class="t m0 x1 h4 y1b ff2 fs0 fc0 sc0 ls0 ws0">跳到自己的<span class="ff1"> home directory : </span></div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6288636316e0ca7141f95e17/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">cd ~ </div><div class="t m0 x1 h4 y1c ff2 fs0 fc0 sc0 ls0 ws0">跳到目前目录的上上两层<span class="ff1"> : </span></div><div class="t m0 x1 h3 y4 ff1 fs0 fc0 sc0 ls0 ws0">cd ../.. </div><div class="t m0 x1 h4 y6 ff2 fs0 fc0 sc1 ls0 ws0">指令名称<span class="ff3 sc0"> : chmod </span></div><div class="t m0 x1 h4 y7 ff2 fs0 fc0 sc1 ls0 ws0">使用权限<span class="ff3 sc0"> : </span>所有使用者<span class="ff3 sc0"> </span></div><div class="t m0 x1 h4 y8 ff2 fs0 fc0 sc1 ls0 ws0">使用方式<span class="ff3 sc0"> : chmod [-cfvR] [--help] [--version] mode file... </span></div><div class="t m0 x1 h4 y9 ff2 fs0 fc0 sc0 ls0 ws0">说明<span class="ff1"> : Linux/Unix </span>的档案存取权限分为三级<span class="ff1"> : </span>档案拥有者、群组、其他。利用<span class="ff1"> chmod </span>可以</div><div class="t m0 x1 h4 ya ff2 fs0 fc0 sc0 ls0 ws0">藉以控制档案如何被他人所存取。<span class="ff1"> </span></div><div class="t m0 x1 h4 yb ff2 fs0 fc0 sc0 ls0 ws0">把计<span class="ff1"> : </span></div><div class="t m0 x1 h4 yc ff1 fs0 fc0 sc0 ls0 ws0">mode : <span class="ff2">权限设定字串，格式如下</span> : [ugoa...][ -=][rwxX]...][,...]<span class="_ _0"></span><span class="ff2">，其中<span class="_ _1"> </span></span>u <span class="ff2">表示该档案的拥有者，</span></div><div class="t m0 x1 h4 yd ff1 fs0 fc0 sc0 ls0 ws0">g <span class="ff2">表示与该档案的拥有者属于同一个群体</span>(group)<span class="ff2">者，</span>o <span class="ff2">表示其他以外的人，</span>a <span class="ff2">表示这三者</span></div><div class="t m0 x1 h4 ye ff2 fs0 fc0 sc0 ls0 ws0">皆是。<span class="ff1"> </span></div><div class="t m0 x1 h4 yf ff2 fs0 fc0 sc0 ls0 ws0">表示增加权限、<span class="ff1">- </span>表示取消权限、<span class="ff1">= </span>表示唯一设定权限。<span class="ff1"> </span></div><div class="t m0 x1 h4 y10 ff1 fs0 fc0 sc0 ls0 ws0">r <span class="ff2">表示可读取，</span>w <span class="ff2">表示可写入，</span>x <span class="ff2">表示可执行，</span>X <span class="ff2">表示只有当该档案是个子目录或者该档案</span></div><div class="t m0 x1 h4 y11 ff2 fs0 fc0 sc0 ls0 ws0">已经被设定过为可执行。<span class="ff1"> </span></div><div class="t m0 x1 h4 y12 ff1 fs0 fc0 sc0 ls0 ws0">-c : <span class="ff2">若该档案权限确实已经更改，才显示其更改动作</span> </div><div class="t m0 x1 h4 y13 ff1 fs0 fc0 sc0 ls0 ws0">-f : <span class="ff2">若该档案权限无法被更改也不要显示错误讯息</span> </div><div class="t m0 x1 h4 y14 ff1 fs0 fc0 sc0 ls0 ws0">-v : <span class="ff2">显示权限变更的详细资料</span> </div><div class="t m0 x1 h4 y15 ff1 fs0 fc0 sc0 ls0 ws0">-R : <span class="ff2">对目前目录下的所有档案与子目录进行相同的权限变更</span>(<span class="ff2">即以递回的方式逐个变更</span>) </div><div class="t m0 x1 h4 y16 ff1 fs0 fc0 sc0 ls0 ws0">--help : <span class="ff2">显示辅助说明</span> </div><div class="t m0 x1 h4 y17 ff1 fs0 fc0 sc0 ls0 ws0">--version : <span class="ff2">显示版本</span> </div><div class="t m0 x1 h4 y18 ff2 fs0 fc0 sc0 ls0 ws0">范例<span class="ff1"> :</span>将档案<span class="ff1"> file1.txt </span>设为所有人皆可读取<span class="ff1"> : </span></div><div class="t m0 x1 h3 y1d ff1 fs0 fc0 sc0 ls0 ws0">chmod ugo r file1.txt </div><div class="t m0 x1 h4 y1e ff2 fs0 fc0 sc0 ls0 ws0">将档案<span class="ff1"> file1.txt </span>设为所有人皆可读取<span class="ff1"> : </span></div><div class="t m0 x1 h3 y1f ff1 fs0 fc0 sc0 ls0 ws0">chmod a r file1.txt </div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6288636316e0ca7141f95e17/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h4 y20 ff2 fs0 fc0 sc0 ls0 ws0">将档案<span class="ff1"> file1.txt </span>与<span class="ff1"> file2.txt </span>设为该档案拥有者，与其所属同一个群体者可写入，但其他以外</div><div class="t m0 x1 h4 y1c ff2 fs0 fc0 sc0 ls0 ws0">的人则不可写入<span class="ff1"> :</span></div><div class="t m0 x1 h3 y21 ff1 fs0 fc0 sc0 ls0 ws0">chmod ug w,o-w file1.txt file2.txt </div><div class="t m0 x1 h4 y22 ff2 fs0 fc0 sc0 ls0 ws0">将<span class="ff1"> ex1.py </span>设定为只有该档案拥有者可以执行<span class="ff1"> : </span></div><div class="t m0 x1 h3 y23 ff1 fs0 fc0 sc0 ls0 ws0">chmod u x ex1.py </div><div class="t m0 x1 h4 y24 ff2 fs0 fc0 sc0 ls0 ws0">将目前目录下的所有档案与子目录皆设为任何人可读取<span class="ff1"> : </span></div><div class="t m0 x1 h3 y25 ff1 fs0 fc0 sc0 ls0 ws0">chmod -R a r * </div><div class="t m0 x1 h4 y26 ff2 fs0 fc0 sc0 ls0 ws0">此外<span class="_ _1"> </span><span class="ff1">chmod<span class="_ _1"> </span></span>也可以用数字来表示权限如<span class="ff1"> chmod 777 file </span></div><div class="t m0 x1 h4 y27 ff2 fs0 fc0 sc0 ls0 ws0">语法为：<span class="ff1">chmod abc file </span></div><div class="t m0 x1 h4 y28 ff2 fs0 fc0 sc0 ls0 ws0">其中<span class="_ _1"> </span><span class="ff1">a,b,c<span class="_ _1"> </span></span>各为一个数字，分别表示<span class="_ _1"> </span><span class="ff1">User</span>、<span class="ff1">Group</span>、及<span class="_ _1"> </span><span class="ff1">Other<span class="_ _1"> </span></span>的权限。<span class="ff1"> </span></div><div class="t m0 x1 h4 y29 ff1 fs0 fc0 sc0 ls0 ws0">r=4<span class="ff2">，</span>w=2<span class="ff2">，</span>x=1 </div><div class="t m0 x1 h4 y2a ff2 fs0 fc0 sc0 ls0 ws0">若要<span class="_ _1"> </span><span class="ff1">rwx<span class="_ _1"> </span></span>属性则<span class="_ _1"> </span><span class="ff1">4 2 1=7</span>；<span class="ff1"> </span></div><div class="t m0 x1 h4 y2b ff2 fs0 fc0 sc0 ls0 ws0">若要<span class="_ _1"> </span><span class="ff1">rw-</span>属性则<span class="_ _1"> </span><span class="ff1">4 2=6</span>；<span class="ff1"> </span></div><div class="t m0 x1 h4 y2c ff2 fs0 fc0 sc0 ls0 ws0">若要<span class="_ _1"> </span><span class="ff1">r-x<span class="_ _1"> </span></span>属性则<span class="_ _1"> </span><span class="ff1">4 1=7</span>。<span class="ff1"> </span></div><div class="t m0 x1 h4 y2d ff2 fs0 fc0 sc0 ls0 ws0">范例：<span class="ff1"> </span></div><div class="t m0 x1 h3 y2e ff1 fs0 fc0 sc0 ls0 ws0">chmod a=rwx file </div><div class="t m0 x1 h4 y2f ff2 fs0 fc0 sc0 ls0 ws0">和<span class="ff1"> </span></div><div class="t m0 x1 h3 y30 ff1 fs0 fc0 sc0 ls0 ws0">chmod 777 file </div><div class="t m0 x1 h4 y31 ff2 fs0 fc0 sc0 ls0 ws0">效果相同<span class="ff1"> </span></div><div class="t m0 x1 h3 y32 ff1 fs0 fc0 sc0 ls0 ws0">chmod ug=rwx,o=x file </div><div class="t m0 x1 h4 y33 ff2 fs0 fc0 sc0 ls0 ws0">和<span class="ff1"> </span></div><div class="t m0 x1 h3 y34 ff1 fs0 fc0 sc0 ls0 ws0">chmod 771 file </div><div class="t m0 x1 h4 y35 ff2 fs0 fc0 sc0 ls0 ws0">效果相同<span class="ff1"> </span></div><div class="t m0 x1 h4 y36 ff2 fs0 fc0 sc0 ls0 ws0">若用<span class="_ _1"> </span><span class="ff1">chmod 4755 filename<span class="_ _1"> </span></span>可使此程式具有<span class="_ _1"> </span><span class="ff1">root<span class="_ _1"> </span></span>的权限<span class="ff1"> </span></div><div class="t m0 x1 h4 y37 ff2 fs0 fc0 sc1 ls0 ws0">指令名称<span class="ff3 sc0"> : chown </span></div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6288636316e0ca7141f95e17/bg4.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h4 y20 ff2 fs0 fc0 sc1 ls0 ws0">使用权限<span class="ff3 sc0"> : root </span></div><div class="t m0 x1 h4 y1c ff2 fs0 fc0 sc1 ls0 ws0">使用方式<span class="ff3 sc0"> : chmod [-cfhvR] [--help] [--version] user[:group] file... </span></div><div class="t m0 x1 h4 y38 ff2 fs0 fc0 sc0 ls0 ws0">说明<span class="ff1"> : Linux/Unix </span>是多人多工作业系统，所有的档案皆有拥有者。利用<span class="ff1"> chown </span>可以将档案</div><div class="t m0 x1 h4 y5 ff2 fs0 fc0 sc0 ls0 ws0">的拥有者加以改变。一般来说，这个指令只有是由系统管理者<span class="ff1">(root)</span>所使用，一般使用者没</div><div class="t m0 x1 h4 y6 ff2 fs0 fc0 sc0 ls0 ws0">有权限可以改变别人的档案拥有者，也没有权限可以自己的档案拥有者改设为别人。只有</div><div class="t m0 x1 h4 y7 ff2 fs0 fc0 sc0 ls0 ws0">系统管理者<span class="ff1">(root)</span>才有这样的权限。<span class="ff1"> </span></div><div class="t m0 x1 h4 y8 ff2 fs0 fc0 sc0 ls0 ws0">把计<span class="ff1"> : </span></div><div class="t m0 x1 h4 y9 ff1 fs0 fc0 sc0 ls0 ws0">user : <span class="ff2">新的档案拥有者的使用者</span> IDgroup : <span class="ff2">新的档案拥有者的使用者群体</span>(group)-c : <span class="ff2">若该档</span></div><div class="t m0 x1 h4 ya ff2 fs0 fc0 sc0 ls0 ws0">案拥有者确实已经更改，才显示其更改动作<span class="ff1">-f : </span>若该档案拥有者无法被更改也不要显示错误</div><div class="t m0 x1 h4 yb ff2 fs0 fc0 sc0 ls0 ws0">讯息<span class="ff1">-h : </span>只对于连结<span class="ff1">(link)</span>进行变更，而非该<span class="ff1"> link </span>真正指向的档案<span class="ff1">-v : </span>显示拥有者变更的详</div><div class="t m0 x1 h4 yc ff2 fs0 fc0 sc0 ls0 ws0">细资料<span class="ff1">-R : </span>对目前目录下的所有档案与子目录进行相同的拥有者变更<span class="ff1">(</span>即以递回的方式逐个</div><div class="t m0 x1 h4 yd ff2 fs0 fc0 sc0 ls0 ws0">变更<span class="ff1">)--help : </span>显示辅助说明<span class="ff1">--version : </span>显示版本<span class="ff1"> </span></div><div class="t m0 x1 h4 ye ff2 fs0 fc0 sc0 ls0 ws0">范例<span class="ff1"> : </span></div><div class="t m0 x1 h4 yf ff2 fs0 fc0 sc0 ls0 ws0">将档案<span class="ff1"> file1.txt </span>的拥有者设为<span class="ff1"> users </span>群体的使用者<span class="ff1"> jessie : </span></div><div class="t m0 x1 h3 y39 ff1 fs0 fc0 sc0 ls0 ws0">chown jessie:users file1.txt </div><div class="t m0 x1 h4 y11 ff2 fs0 fc0 sc0 ls0 ws0">将目前目录下的所有档案与子目录的拥有者皆设为<span class="ff1"> users </span>群体的使用者<span class="ff1"> lamport : </span></div><div class="t m0 x1 h3 y3a ff1 fs0 fc0 sc0 ls0 ws0">chmod -R lamport:users * </div><div class="t m0 x1 h4 y14 ff2 fs0 fc0 sc1 ls0 ws0">名称：<span class="ff3 sc0">cp </span></div><div class="t m0 x1 h4 y15 ff2 fs0 fc0 sc1 ls0 ws0">使用权限：所有使用者<span class="ff3 sc0"> </span></div><div class="t m0 x1 h4 y16 ff2 fs0 fc0 sc1 ls0 ws0">使用方式：<span class="ff3 sc0"> </span></div><div class="t m0 x1 h3 y3b ff1 fs0 fc0 sc0 ls0 ws0">cp [options] source dest </div><div class="t m0 x1 h3 y3c ff1 fs0 fc0 sc0 ls0 ws0">cp [options] source... directory </div><div class="t m0 x1 h4 y19 ff2 fs0 fc0 sc0 ls0 ws0">说明：将一个档案拷贝至另一档案，或将数个档案拷贝至另一目录。<span class="ff1"> </span></div><div class="t m0 x1 h4 y1e ff2 fs0 fc0 sc0 ls0 ws0">把计<span class="ff1"> </span></div><div class="t m0 x1 h4 y1b ff1 fs0 fc0 sc0 ls0 ws0">-a <span class="ff2">尽可能将档案状态、权限等资料都照原状予以复制。</span> </div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6288636316e0ca7141f95e17/bg5.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h4 y20 ff1 fs0 fc0 sc0 ls0 ws0">-r <span class="ff2">若</span> source <span class="ff2">中含有目录名，则将目录下之档案亦皆依序拷贝至目的地。</span> </div><div class="t m0 x1 h4 y1c ff1 fs0 fc0 sc0 ls0 ws0">-f <span class="ff2">若目的地已经有相同档名的档案存在，则在复制前先予以删除再行复制。</span> </div><div class="t m0 x1 h4 y22 ff2 fs0 fc0 sc0 ls0 ws0">范例：<span class="ff1"> </span></div><div class="t m0 x1 h4 y3d ff2 fs0 fc0 sc0 ls0 ws0">将档案<span class="ff1"> aaa </span>复制<span class="ff1">(</span>已存在<span class="ff1">)</span>，并命名为<span class="ff1"> bbb : </span></div><div class="t m0 x1 h3 y3e ff1 fs0 fc0 sc0 ls0 ws0">cp aaa bbb </div><div class="t m0 x1 h4 y3f ff2 fs0 fc0 sc0 ls0 ws0">将所有的<span class="_ _1"> </span><span class="ff1">C<span class="_ _1"> </span></span>语言程式拷贝至<span class="ff1"> Finished </span>子目录中<span class="ff1"> : </span></div><div class="t m0 x1 h3 y40 ff1 fs0 fc0 sc0 ls0 ws0">cp *.c Finished </div><div class="t m0 x1 h4 y27 ff2 fs0 fc0 sc1 ls0 ws0">名称：<span class="ff3 sc0">cut </span></div><div class="t m0 x1 h4 y28 ff2 fs0 fc0 sc1 ls0 ws0">使用权限：所有使用者<span class="ff3 sc0"> </span></div><div class="t m0 x1 h4 y29 ff2 fs0 fc0 sc1 ls0 ws0">用法：<span class="ff3 sc0">cut -cnum1-num2 filename </span></div><div class="t m0 x1 h4 y2a ff2 fs0 fc0 sc0 ls0 ws0">说明：显示每行从开头算起<span class="ff1"> num1 </span>到<span class="ff1"> num2 </span>的文字。<span class="ff1"> </span></div><div class="t m0 x1 h4 y2b ff2 fs0 fc0 sc0 ls0 ws0">范例：<span class="ff1"> </span></div><div class="t m0 x1 h3 y41 ff1 fs0 fc0 sc0 ls0 ws0">shell>> cat example </div><div class="t m0 x1 h3 y42 ff1 fs0 fc0 sc0 ls0 ws0">test2 </div><div class="t m0 x1 h3 y2e ff1 fs0 fc0 sc0 ls0 ws0">this is test1 </div><div class="t m0 x1 h4 y43 ff2 fs0 fc0 sc0 ls0 ws0">字串<span class="_ _1"> </span><span class="ff1">1</span></div><div class="t m0 x1 h4 y44 ff1 fs0 fc0 sc0 ls0 ws0">shell>> cut -c0-6 example ## print <span class="ff2">开头算起前</span> 6 <span class="ff2">个字元</span> </div><div class="t m0 x1 h3 y45 ff1 fs0 fc0 sc0 ls0 ws0">test2 </div><div class="t m0 x1 h3 y46 ff1 fs0 fc0 sc0 ls0 ws0">this i </div><div class="t m0 x1 h4 y47 ff2 fs0 fc0 sc1 ls0 ws0">名称<span class="ff3 sc0"> : find </span></div><div class="t m0 x1 h4 y48 ff2 fs0 fc0 sc1 ls0 ws0">用法<span class="ff3 sc0"> : find </span></div><div class="t m0 x1 h4 y49 ff2 fs0 fc0 sc1 ls0 ws0">使用说明<span class="ff3 sc0"> : </span></div><div class="t m0 x1 h4 y4a ff2 fs0 fc0 sc0 ls0 ws0">将档案系统内符合<span class="ff1"> expression </span>的档案列出来。你可以指要档案的名称、类别、时间、大小、</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>