[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fwA_EjgoBfYD9qSqDGuwR4X8Xdvl3aBZsxCCYEKySpDo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-05-16 11:50:15",188335320,[8,9,10,11],"file.2的内容将会被file.1的内容替换","file.2会更名为file.1","将file.1的内容加入到file.2文件结尾","将file.1的内容加入到file.2文件开头",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},49,"c1f6ab9c072c49f31938bd7393e59a8d","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5d17d2c3b7267120de549fc6a2250eda.png","Linux操作系统","228f8229c87c4dcabb0e286e0b98c78f","shell编程与调试","命令 cat file.1 &gt; file.2 的结果是()",[21,33,42,51,60,66,69,73,82,91],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-05-16 11:50:14",188335315,[26,27,28,29],"#","$","&amp;","*","在shell脚本文件中,行首写上符号()表示该行为注释","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],188335316,[37,38,39,40],"比较hello与test文件的内容","将hello这个字符输出到屏幕上","将hello这个字符输出到test文件中","什么都不做","在linux下echo hello &gt; test这条命令中&quot;&gt;&quot;符号的作用是()",{"answer":43,"createTime":23,"id":44,"options":45,"question":50,"source":31,"type":32},[],188335317,[46,47,48,49],"将test文件的内容清空","将hello这个字符添加到test文件开头","将hello这个字符添加到test文件的末尾","什么都不作","在linux下echo hello &gt;&gt; test这条命令中&quot;&gt;&gt;&quot;符号的作用是()",{"answer":52,"createTime":23,"id":53,"options":54,"question":59,"source":31,"type":32},[],188335318,[55,56,57,58],"&gt;","&gt;&gt;","&lt;","&lt;&lt;","在linux下表示追加输出重定向的符号是()",{"answer":61,"createTime":23,"id":62,"options":63,"question":65,"source":31,"type":32},[],188335319,[55,64,57,58],"&gt;=","在linux下表示输出重定向的符号是()",{"answer":67,"createTime":5,"id":6,"options":68,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":70,"createTime":5,"id":71,"options":72,"question":41,"source":31,"type":32},[],188335321,[37,38,39,49],{"answer":74,"createTime":5,"id":75,"options":76,"question":81,"source":31,"type":32},[],188335322,[77,78,79,80],"gcc","vim","gimp","xine","下面哪个命令是Linux下的全屏文本编辑器()",{"answer":83,"createTime":5,"id":84,"options":85,"question":90,"source":31,"type":32},[],188335323,[86,87,88,89],"#!\u002Fbin\u002Fbash","#\u002Fbin\u002Fbash","!\u002Fbin\u002Fbash","\u002Fbin\u002Fbash","一个bash shell脚本的第一行是什么()",{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":31,"type":32},[],188335324,[95,96,97,98],"myfile被移动","myfile被复制","myfile被打印","myfile的内容被覆盖","如果文件myfile已存在,执行echo &quot;Hello World&quot; &gt; myfile的结果是()"]