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              文件系統常用命令:cat命令

              為方便馬哥學員的理解和使用,馬哥linux運維團隊特別做了《馬哥Linux命令大全錦集》,命令是集合了馬哥教育學員在工作中使用的Linux常用命令,由馬哥創始團隊加工精制而成。

              本期為《馬哥Linux命令大全錦集》03期,本期介紹的Linux命令為文件系統常用命令:cat命令。

              1.cat命令的定義

              Cat:concatenate,Concatenate files and print on the standard output:意思是連接文件并顯示在標準輸出上

              2.cat命令的作用

              文件內容是什么給你顯示出來。

              這是一個文本文件查看工具,只能用于查看文本,你千萬不要cat binls,ls可能會損壞的。

              3.cat命令的使用

               

              ~]# cat /bin/ls

               

              Cat命令有個與之唱對臺戲的命令叫Tac

              –那么tac是用來做什么的?

              –一樣的,文本文件查看工具。跟cat一模一樣。只是反過來寫的。

              意思是,文件的內容是逆序的,僅此而已。

              比如說:

              ~]# cat /etc/issue

              ~]# tac /etc/issue

              文件系統常用命令:cat命令

              以上為cat命令的常見使用。

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