lingx命令

重定向命令","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"zVWR-1653616119345","name":"paragraph","data":{},"nodes":[{"type":"text","id":"WmMI-1653616119344","leaves":[{"text":">覆盖","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"lU79-1653616135595","name":"paragraph","data":{},"nodes":[{"type":"text","id":"MPnY-1653616135593","leaves":[{"text":">>追加不覆盖","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"ho0P-1653616409749","name":"paragraph","data":{},"nodes":[{"type":"text","id":&quot

PtW-1653616409747","leaves":[{"text":"cat wubo.1>wubo.2 如果wubo.2是空文档则将wubo.1的内容相当复制到了wubo.2，如果wubo.2有内容则直接覆盖（如果目标文件不存在，会新建文件）","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"2dsk-1653616208895","name":"paragraph","data":{},"nodes":[{"type":"text","id":"GI44-1653616208883","leaves":[{"text":"cat wubo.1 > wubo.2 将wubo.1的内容覆盖wubo.2的内容","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"mt7I-1653616320179","name":"paragraph","data":{},"nodes":[{"type":"text","id":"Ciia-1653616320165","leaves":[{"text":"cat wubo.1 >> wubo.2 将wubo.1的内容追加到wubo.2中去不会覆盖wubo.2已有的内容","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"Tft2-1653616346327","name":"paragraph","data":{},"nodes":[{"type":"text","id":"bZyR-1653616346325","leaves":[{"text":" ","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"44ia-1653617276167","name":"paragraph","data":{},"nodes":[{"type":"text","id":"FL4H-1653617276164","leaves":[{"text":"head命令","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"ODiq-1653617358122","name":"image","data":{"url":"//note.youdao.com/yws/res/f/WEBRESOURCE31b6ca2552b3c8d5c20e9e009396ff3f","version":1,"width":274,"height":184},"nodes":[],"state":{"renderSource":"//note.youdao.com/yws/res/f/WEBRESOURCE31b6ca2552b3c8d5c20e9e009396ff3f","initialSize":{"width":410,"height":274},"loading":false}},{"type":"block","id":"NMWo-1653617291232","name":"paragraph","data":{},"nodes":[{"type":"text","id":"uECS-1653617291230","leaves":[{"text":"head wubo.2 默认查看文件前十行内容","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"3itO-1653617390072","name":"paragraph","data":{},"nodes":[{"type":"text","id":"aGLS-1653617390070","leaves":[{"text":"head -n 5 指定行，指定查看wubo.2的前五行；-n是参数后面接几就是看几行","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"0usu-1653617540946","name":"paragraph","data":{},"nodes":[{"type":"text","id":"kwNT-1653617540944","leaves":[{"text":"tail命令","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"d3LD-1653617735382","name":"image","data":{"url":"//note.youdao.com/yws/res/4/WEBRESOURCE83a25fe8928f78003c6414f9aeceda84","version":1,"width":287,"height":180},"nodes":[],"state":{"renderSource":"//note.youdao.com/yws/res/4/WEBRESOURCE83a25fe8928f78003c6414f9aeceda84","initialSize":{"width":287,"height":179},"loading":false}},{"type":"block","id":"6NGA-1653617582764","name":"paragraph","data":{},"nodes":[{"type":"text","id":"5XQs-1653617582762","leaves":[{"text":"tail wubo.2","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":" 默认查看文件后十行内容","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"OPCm-1653617739107","name":"paragraph","data":{},"nodes":[{"type":"text","id":"Uxc3-1653617739105","leaves":[{"text":"tail -n 3 wubo.2","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":" 指定行，指定查看wubo.2的后三行；-n是参数后面接几就是看几行","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"38oA-1653620159424","name":"paragraph","data":{},"nodes":[{"type":"text","id":"NFKo-1653620159420","leaves":[{"text":"需求：显示5-12行的数据","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"Z7Be-1653620190596","name":"paragraph","data":{},"nodes":[{"type":"text","id":"uAKR-1653620190595","leaves":[{"text":"tail -n +5 wubo.2 |head -n 8","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":" ","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"zWqR-1653620737393","name":"paragraph","data":{},"nodes":[{"type":"text","id":&quot

fgg-1653620737391","leaves":[{"text":"","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"9u8S-1653620743186","name":"paragraph","data":{},"nodes":[{"type":"text","id":"EQTt-1653620743185","leaves":[{"text":"文件目录权限","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"ty1U-1653620816622","name":"paragraph","data":{},"nodes":[{"type":"text","id":"K7eV-1653620816607","leaves":[{"text":"chmod","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"==》修改文件的权限","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":&quot

U8s-1653621121948","name":"paragraph","data":{},"nodes":[{"type":"text","id":"Q0U9-1653621121936","leaves":[{"text":"chown","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"==》修改文件或目录的属主","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"zmbt-1653621146036","name":"paragraph","data":{},"nodes":[{"type":"text","id":"mvLy-1653621146035","leaves":[{"text":"chgrp","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"==》修改文件或目录的属组","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"OLV8-1653621188190","name":"paragraph","data":{},"nodes":[{"type":"text","id":"qVjo-1653621188189","leaves":[{"text":"-rw-r-xrwx.1 root root 11 May 26 18:56 wubo","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"CXNe-1653621257070","name":"paragraph","data":{},"nodes":[{"type":"text","id":"cDLA-1653621257056","leaves":[{"text":"前三位rw- 代表属主的权限（文件拥有者）（自己可以写，读，不可执行）》 ","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"u","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":&quot

4kh-1653621279887","name":"paragraph","data":{},"nodes":[{"type":"text","id":"Ydqg-1653621279885","leaves":[{"text":"中间三位r-- 代表属组的权限（属组可以读，不可写和执行）》 ","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":" g ","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"dvQh-1653621363459","name":"paragraph","data":{},"nodes":[{"type":"text","id":"IkPS-1653621363455","leaves":[{"text":"后三位rwx 代表其它用户权限（其它用户可以读，写，执行）》 ","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"o","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"Jyml-1653621456630","name":"paragraph","data":{},"nodes":[{"type":"text","id":"qBOm-1653621456629","leaves":[{"text":"r ","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"（read）读数字代表：","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"4","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"HXYu-1653621463866","name":"paragraph","data":{},"nodes":[{"type":"text","id":"GF3g-1653621463864","leaves":[{"text":"w","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"（write）写数学代表：","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"2","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"Kpim-1653621465838","name":"paragraph","data":{},"nodes":[{"type":"text","id":"gusZ-1653621465837","leaves":[{"text":"x","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":" （execute）执行数字代表：","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"1","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"0pkZ-1653622034523","name":"paragraph","data":{},"nodes":[{"type":"text","id":"ND6w-1653622034521","leaves":[{"text":"chmod命令","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"zUug-1653621930597","name":"paragraph","data":{},"nodes":[{"type":"text","id":"mjfE-1653621930593","leaves":[{"text":"chmod 444 wubo.1","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":" == 让所以用户对wubo.1这个文件都有读的权限","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"iEOi-1653617735372","name":"paragraph","data":{},"nodes":[{"type":"text","id":"N3CV-1653617735373","leaves":[{"text":"chmod -R 777 123","marks":[{"type":"fontSize","value":16},{"type":"bold"},{"type":"color","value":"#FF0001"}]},{"text":" == \t让123目录及目录下所以文件都有所有权限","marks":[{"type":"fontSize","value":16},{"type":"bold"},{"type":"color","value":"#000000"}]}]}],"state":{}},{"type":"block","id":"o8Cm-1653622529421","name":"image","data":{"url":"//note.youdao.com/yws/res/9/WEBRESOURCE12557a084a7aa94d28cf6845af12f9b9","version":1,"width":528,"height":232},"nodes":[],"state":{"renderSource":"//note.youdao.com/yws/res/9/WEBRESOURCE12557a084a7aa94d28cf6845af12f9b9","initialSize":{"width":622,"height":270},"loading":false}},{"type":"block","id":&quot

gpY-1653617713131","name":"paragraph","data":{},"nodes":[{"type":"text","id":"mRHk-1653617713129","leaves":[{"text":"chmod  u+x  wubo.1  ","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"==>给属主增加执行权限","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"QRK0-1653632106938","name":"paragraph","data":{},"nodes":[{"type":"text","id":"eArc-1653632106933","leaves":[{"text":"chmod  u-x  wubo.1","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"  ==>给属主去掉执行权限","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"UiEe-1653631786568","name":"image","data":{"url":"//note.youdao.com/yws/res/7/WEBRESOURCEdc4512b62b156bb40b1aeb1980108b67","version":1,"width":537,"height":119},"nodes":[],"state":{"renderSource":"//note.youdao.com/yws/res/7/WEBRESOURCEdc4512b62b156bb40b1aeb1980108b67","initialSize":{"width":537,"height":119},"loading":false}},{"type":"block","id":"o6Kt-1653631786576","name":"paragraph","data":{"style":{}},"nodes":[{"type":"text","id":"cYFe-1653631786572","leaves":[{"text":"chown linux wubo.1 ","marks":[{"type":"fontSize","value":18},{"type":"bold"},{"type":"color","value":"#FF0001"}]},{"text":"==》把wubo.1文件属主修改成Linux","marks":[{"type":"fontSize","value":18},{"type":"bold"},{"type":"color","value":"#000000"}]}]}],"state":{}},{"type":"block","id":"yW1q-1653632533026","name":"image","data":{"url":"//note.youdao.com/yws/res/d/WEBRESOURCEdc047f9baa1612a355951d8ef31f116d","version":1,"width":577,"height":288},"nodes":[],"state":{"renderSource":"//note.youdao.com/yws/res/d/WEBRESOURCEdc047f9baa1612a355951d8ef31f116d","initialSize":{"width":577,"height":288},"loading":false}},{"type":"block","id":"szDM-1653632533033","name":"paragraph","data":{},"nodes":[{"type":"text","id":"Fb3n-1653632533030","leaves":[{"text":"chgrp Linux  wubo.1 ","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"==》  把wubo.1文件属组修改成Linux","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"xsVm-1653655076108","name":"paragraph","data":{},"nodes":[{"type":"text","id":"l5hT-1653655076109","leaves":[{"text":"g","marks":[]}]}],"state":{}},{"type":"block","id":"10K8-1653632572415","name":"paragraph","data":{},"nodes":[{"type":"text","id":"fPxo-1653632572414","leaves":[{"text":"chown  root.root  wubo.2","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":"  ==》把wubo.2文件属主，属组都修改成为root","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"ECJ9-1653632914546","name":"image","data":{"url":"//note.youdao.com/yws/res/6/WEBRESOURCE1949dbbbbd81298cbbe1e219fc465f46","version":1,"width":731,"height":100},"nodes":[],"state":{"renderSource":"//note.youdao.com/yws/res/6/WEBRESOURCE1949dbbbbd81298cbbe1e219fc465f46","initialSize":{"width":731,"height":100},"loading":false}},{"type":"block","id":"xY8r-1653632914552","name":"paragraph","data":{},"nodes":[{"type":"text","id":"6qph-1653632914550","leaves":[{"text":"chown  -R  linux.linux wubo.1","marks":[{"type":"color","value":"#FF0001"},{"type":"bold"},{"type":"fontSize","value":16}]},{"text":" ==》把wubo.1目录及文件下的属主，属组修改问Linux","marks":[{"type":"color","value":"#000000"},{"type":"bold"},{"type":"fontSize","value":16}]}]}],"state":{}},{"type":"block","id":"1A5v-1653633621353","name":"paragraph","data":{},"nodes":[{"type":"text","id":"OLOx-1653633621349","leaves":[{"text":"useradd 命令","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"KiKn-1653633722030","name":"paragraph","data":{},"nodes":[{"type":"text","id":"Jg2z-1653633722028","leaves":[{"text":"useradd  wubo  ==》添加一个wubo用户，用户默认在自己的用户组","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"mMi8-1653650926298","name":"paragraph","data":{},"nodes":[{"type":"text","id":"UaUX-1653650926296","leaves":[{"text":"useradd  wubo  -g  linux  ==》添加用户到指定用户组","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"6dEr-1653650915669","name":"paragraph","data":{},"nodes":[{"type":"text","id":"a2m8-1653650915667","leaves":[{"text":"userdel  -r  wubo ==》删除wubo 用户","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"fefc-1653633764045","name":"paragraph","data":{},"nodes":[{"type":"text","id":"uk6q-1653633764033","leaves":[{"text":"cat /etc/group ==》查看所有用户组","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"0U4V-1653633938227","name":"paragraph","data":{},"nodes":[{"type":"text","id":"gNdg-1653633938226","leaves":[{"text":"groups  wubo  ==》查看wubo用户属于哪个用户组","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"o5d4-1653634158867","name":"paragraph","data":{},"nodes":[{"type":"text","id":"ZWJ2-1653634158865","leaves":[{"text":"groupadd  wubo2  ==》新建一个用户组里面没有任何用量","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"mzng-1653651078198","name":"paragraph","data":{},"nodes":[{"type":"text","id":"pvrd-1653651078196","leaves":[{"text":"groupdel  wuclbo2  ==》删除wubo2用户组","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"2C5W-1653636323643","name":"paragraph","data":{},"nodes":[{"type":"text","id":"CANg-1653636323625","leaves":[{"text":"gpasswd  -a  wubo1  wubo2  ==》把用户wubo1添加到wubo2这个用户组里面","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"ttub-1653637089286","name":"paragraph","data":{},"nodes":[{"type":"text","id":"HrXa-1653637089281","leaves":[{"text":"gpasswd  -d  wubo1 wubo2  ==》把用户wubo1从wubo2这个用户组移除","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"RLJr-1653637168095","name":"paragraph","data":{},"nodes":[{"type":"text","id":"QMdy-1653637168080","leaves":[{"text":"passwd 命令","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"RV9g-1653634267018","name":"paragraph","data":{"version":1},"nodes":[{"type":"text","id":"QcXZ-1653634267017","leaves":[{"text":"passwd wubo  设置新用户密码","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"B9Bl-1653639343849","name":"paragraph","data":{},"nodes":[{"type":"text","id":"2zf3-1653639343846","leaves":[{"text":"tar命令（可以对文件和目录进行打包，解压）","marks":[{"type":"fontSize","value":18},{"type":"color","value":"#000000"},{"type":"bold"}]}]}],"state":{}},{"type":"block","id":"Ruvl-1653639924902","name":"image","data":{"url":"//note.youdao.com/yws/res/8/WEBRESOURCEab2e77783b2b2cee8567a35ea96a38e8","version":1,"width":645,"height":178},"nodes":[],"state":{"renderSource":"//note.youdao.com/yws/res/8/WEBRESOURCEab2e77783b2b2cee8567a35ea96a38e8","initialSize":{"width":645,"height":178},"loading":false}},{"type":"block","id":"izoW-1653635398851","name":"paragraph","data":{},"nodes":[{"type":"text","id":"mnbA-1653635398847","leaves":[{"text":"zip包（可以对文件和目录进行打包和解压操作）","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"833Z-1653640041949","name":"paragraph","data":{},"nodes":[{"type":"text","id":"YFPf-1653640041936","leaves":[{"text":"zip wubo.zip  wubo.1  ==》将wubo.1文件打包成wubo.zip包","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"3Evg-1653641119191","name":"paragraph","data":{},"nodes":[{"type":"text","id":"t02B-1653641119189","leaves":[{"text":"unzip  wubo.zip ==》对文件压缩包进行解压","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"Op7h-1653641155549","name":"paragraph","data":{},"nodes":[{"type":"text","id":"pS3o-1653641155547","leaves":[{"text":"zip  -r  wubo1.zip  wubo1 ==》对目录进行打包","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"Yts4-1653643556683","name":"paragraph","data":{},"nodes":[{"type":"text","id":"2KCe-1653643556679","leaves":[{"text":"unzip  wubo3.zipta" r="=》" 对目录压缩包进行解压","marks":[{"type":"bold"},{"type":"fontsize","value":18}]}]}],"state":{}},{"type":"block","id":"uvzw-1653641219992","name":"paragraph","data":{},"nodes":[{"type":"text","id":"9h5l-1653641219977","leaves":[{"text":"","marks":[{"type":"bold"},{"type":"fontsize","value":18}]}]}],"state":{}},{"type":"block","id":"8j9r-1653640849908","name":"image","data":{"url":"="" note.youdao.com="" yws="" res="" 8="" webresourceaffde69113f0e32f9887903db561f248","version":1,"width":645,"height":124},"nodes":[],"state":{"rendersource":"="" webresourceaffde69113f0e32f9887903db561f248","initialsize":{"width":645,"height":124},"loading":false}},{"type":"block","id":"4nn6-1653640849917","name":"paragraph","data":{},"nodes":[{"type":"text","id":"colu-1653640849912","leaves":[{"text":"yum命令","marks":[{"type":"bold"},{"type":"fontsize","value":18}]}]}],"state":{}},{"type":"block","id":"tbb1-1653641283621","name":"paragraph","data":{},"nodes":[{"type":"text","id":"qyq4-1653641283609","leaves":[{"text":"yum="" insatll="" lrzsz="" 在线下载安装lrzsz应用","marks":[{"type":"bold"},{"type":"fontsize","value":18}]}]}],"state":{}},{"type":"block","id":"zo8u-1653641322658","name":"paragraph","data":{},"nodes":[{"type":"text","id":"yq4p-1653641322656","leaves":[{"text":"rz="=》从本地上传文件到服务器","marks":[{"type":"bold"},{"type":"fontSize","value":18}]}]}],"state":{}},{"type":"block","id":"CqfO-1653641330521","name":"paragraph","data":{},"nodes":[{"type":"text","id":"kIw6-1653641330520","leaves":[{"text":"sz" =="》" 从服务器拿取文件到服务器","marks":[{"type":"bold"},{"type":"fontsize","value":18}]}]}],"state":{}}]'=""> grep命令
grep  搜索关键字
grep  ds  wubo.1  查找wubo.1文件中有包含ds字符的行
| （管道符命令）
传送信息到另一个命令使用
cat wubo.1  |  grep "ds"  将cat输出的内容传送到右边grep进行操作查找有关ds相关信息
>重定向命令
>覆盖
>>追加不覆盖
cat wubo.1>wubo.2 如果wubo.2是空文档则将wubo.1的内容相当复制到了wubo.2，如果wubo.2有内容则直接覆盖（如果目标文件不存在，会新建文件）
cat wubo.1 > wubo.2 将wubo.1的内容覆盖wubo.2的内容
cat wubo.1 >> wubo.2 将wubo.1的内容追加到wubo.2中去不会覆盖wubo.2已有的内容

head命令

head wubo.2 默认查看文件前十行内容
head -n 5 指定行，指定查看wubo.2的前五行；-n是参数后面接几就是看几行
tail命令

tail wubo.2  默认查看文件后十行内容
tail -n 3  wubo.2  指定行，指定查看wubo.2的后三行；-n是参数后面接几就是看几行
需求：显示5-12行的数据
tail -n +5 wubo.2 |head -n 8

文件目录权限
chmod==》修改文件的权限
chown==》修改文件或目录的属主
chgrp==》修改文件或目录的属组
-rw-r-xrwx.1  root  root 11  May  26  18:56 wubo
前三位rw- 代表属主的权限（文件拥有者）（自己可以写，读，不可执行）》  u
中间三位r-- 代表属组的权限                            （属组可以读，不可写和执行）》 g
后三位rwx 代表其它用户权限                      （其它用户可以读，写，执行）》  o
r （read）读    数字代表  ：4
w（write）写    数学代表  ：2
x  （execute）执行数字代表  ：1
chmod命令
chmod  444  wubo.1 == 让所以用户对wubo.1这个文件都有读的权限
chmod -R 777  123  == 让123目录及目录下所以文件都有所有权限

chmod u+x wubo.1 ==>给属主增加执行权限
chmod u-x wubo.1 ==>给属主去掉执行权限

chown linux wubo.1 ==》把wubo.1文件属主修改成Linux

chgrp Linux wubo.1 ==》把wubo.1文件属组修改成Linux
g
chown root.root wubo.2 ==》把wubo.2文件属主，属组都修改成为root

chown  -R  linux.linux wubo.1 ==》把wubo.1目录及文件下的属主，属组修改问Linux
useradd 命令
useradd  wubo  ==》添加一个wubo用户，用户默认在自己的用户组
useradd  wubo  -g  linux  ==》添加用户到指定用户组
userdel  -r  wubo ==》删除wubo 用户
cat /etc/group ==》查看所有用户组
groups  wubo  ==》查看wubo用户属于哪个用户组
groupadd  wubo2  ==》新建一个用户组里面没有任何用量
groupdel  wuclbo2  ==》删除wubo2用户组
gpasswd  -a  wubo1  wubo2  ==》把用户wubo1添加到wubo2这个用户组里面
gpasswd  -d  wubo1 wubo2  ==》把用户wubo1从wubo2这个用户组移除
passwd 命令
passwd wubo  设置新用户密码
tar命令（可以对文件和目录进行打包，解压）

zip包（可以对文件和目录进行打包和解压操作）
zip wubo.zip  wubo.1  ==》将wubo.1文件打包成wubo.zip包
unzip  wubo.zip ==》对文件压缩包进行解压
zip  -r  wubo1.zip  wubo1 ==》对目录进行打包
unzip  wubo3.zipta'r  ==》  对目录压缩包进行解压