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<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/62907305e74b9677e8cfa932/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">Linux<span class="_ _0"> </span><span class="ff2">基础</span></div><div class="t m0 x2 h4 y3 ff1 fs0 fc0 sc0 ls0 ws0">-<span class="_ _1"> </span><span class="ff2 fs1">张良峰</span></div><div class="t m0 x3 h5 y4 ff1 fs2 fc0 sc0 ls0 ws0"> </div></div></div><div class="pi" data-data='{"ctm":[0.999990,0.000000,0.000000,0.999990,0.000000,0.000000]}'></div></div>
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<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/62907305e74b9677e8cfa932/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x4 h6 y5 ff1 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h3 y6 ff1 fs0 fc0 sc0 ls0 ws0">1<span class="_ _1"> </span><span class="ff2">、用户和组的简单管理</span></div><div class="t m0 x5 h3 y7 ff1 fs0 fc0 sc0 ls0 ws0">2<span class="_ _1"> </span><span class="ff2">、文件和目录的简单管理</span></div><div class="t m0 x5 h3 y8 ff1 fs0 fc0 sc0 ls0 ws0">3<span class="_ _1"> </span><span class="ff2">、<span class="_ _1"> </span></span>VIM<span class="_ _1"> </span><span class="ff2">的简单使用</span></div></div></div><div class="pi" data-data='{"ctm":[0.999990,0.000000,0.000000,0.999990,0.000000,0.000000]}'></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/62907305e74b9677e8cfa932/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x6 h7 y9 ff2 fs4 fc0 sc0 ls0 ws0">用户和组的简单管理</div><div class="t m0 x6 h8 ya ff3 fs1 fc0 sc0 ls0 ws0">•</div><div class="t m0 x7 h9 yb ff2 fs1 fc0 sc0 ls0 ws0">标识符（<span class="_ _2"> </span><span class="ff1">UID<span class="_ _3"> </span></span>）</div><div class="t m0 x6 h9 yc ff2 fs1 fc0 sc0 ls0 ws0">系统管理员<span class="_ _2"> </span><span class="ff1">UID<span class="_ _3"> </span></span>为<span class="_ _2"> </span><span class="ff1">0</span></div><div class="t m0 x6 h9 yd ff2 fs1 fc0 sc0 ls0 ws0">系统用户<span class="_ _2"> </span><span class="ff1">UID<span class="_ _3"> </span></span>为<span class="_ _2"> </span><span class="ff1">1~999</span></div><div class="t m0 x6 h9 ye ff2 fs1 fc0 sc0 ls0 ws0">普通用户<span class="_ _2"> </span><span class="ff1">UID<span class="_ _3"> </span></span>为<span class="_ _2"> </span><span class="ff1">1000<span class="_ _3"> </span></span>以上</div><div class="t m0 x6 h9 yf ff2 fs1 fc0 sc0 ls0 ws0">系统中每一个<span class="_ _2"> </span><span class="ff1">UID<span class="_ _3"> </span></span>都是唯一的且<span class="_ _4"></span>对应一个账号</div></div></div><div class="pi" data-data='{"ctm":[0.999990,0.000000,0.000000,0.999990,0.000000,0.000000]}'></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/62907305e74b9677e8cfa932/bg4.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x6 h7 y9 ff2 fs4 fc0 sc0 ls0 ws0">用户和组的简单管理</div><div class="t m0 x6 h9 yb ff2 fs1 fc0 sc0 ls0 ws0">用户文件<span class="_ _5"> </span>：<span class="_ _2"> </span><span class="ff1">/etc/passwd<span class="_ _3"> </span></span>、<span class="_ _3"> </span><span class="ff1">/etc/shadow</span></div><div class="t m0 x6 h9 y10 ff1 fs1 fc0 sc0 ls0 ws0">/etc/passwd<span class="_ _3"> </span><span class="ff2">：存放用户账<span class="_ _4"></span>号的相关信息</span></div><div class="t m0 x8 ha y11 ff2 fs2 fc1 sc0 ls0 ws0">每行由<span class="_ _6"> </span><span class="ff1">7<span class="_ _6"> </span></span>个字段组成，以：作为分隔符</div><div class="t m0 x6 ha y12 ff2 fs2 fc2 sc0 ls0 ws0">用户名<span class="fc3 sc1">：</span>密码<span class="fc3 sc1">：</span> <span class="_ _6"> </span><span class="ff1">UID <span class="_ _6"> </span></span><span class="fc3 sc1">：</span> <span class="_ _6"> </span><span class="ff1">GID <span class="_ _6"> </span></span><span class="fc3 sc1">：</span>用户信息<span class="fc3 sc1">：</span>家目录<span class="fc3 sc1">：</span></div><div class="t m0 x6 h5 y13 ff1 fs2 fc2 sc0 ls0 ws0">Shell</div></div></div><div class="pi" data-data='{"ctm":[0.999990,0.000000,0.000000,0.999990,0.000000,0.000000]}'></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/62907305e74b9677e8cfa932/bg5.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x6 h7 y9 ff2 fs4 fc0 sc0 ls0 ws0">用户和组的简单管理</div><div class="t m0 x6 h9 yb ff2 fs1 fc0 sc0 ls0 ws0">用户文件<span class="_ _5"> </span>：<span class="_ _2"> </span><span class="ff1">/etc/passwd<span class="_ _3"> </span></span>、<span class="_ _3"> </span><span class="ff1">/etc/shadow</span></div><div class="t m0 x6 h9 y10 ff1 fs1 fc0 sc0 ls0 ws0">/etc/shadow<span class="_ _3"> </span><span class="ff2">：存储 <span class="_ _2"> </span></span>Li<span class="_ _7"></span>nux <span class="_ _3"> </span><span class="ff2">系统中用户的<span class="_ _4"></span>密码信息</span></div><div class="t m0 x9 ha y14 ff2 fs2 fc1 sc0 ls0 ws0">每行由<span class="_ _6"> </span><span class="ff1">9<span class="_ _6"> </span></span>个字段组成，以：作为分隔符</div><div class="t m0 x6 ha y15 ff2 fs2 fc0 sc0 ls0 ws0">用户名<span class="fc3 sc1">：</span>密码<span class="fc3 sc1">：</span>最后一次修改时间<span class="fc3 sc1">：</span>最小修改间隔时间<span class="fc3 sc1">：</span>密码有效期<span class="_ _4"></span><span class="fc3 sc1">：<span class="fc0 sc0">密码</span></span></div><div class="t m0 x6 ha y16 ff2 fs2 fc0 sc0 ls0 ws0">需要修改前的警告天数<span class="fc3 sc1">：</span>密码过期后的宽限天数<span class="fc3 sc1">：</span>账号失效时间<span class="fc3 sc1">：</span>保留</div></div></div><div class="pi" data-data='{"ctm":[0.999990,0.000000,0.000000,0.999990,0.000000,0.000000]}'></div></div>
