Linux Basic Four

Linux file Types      Common Files: - , f     directory file  :  d   (path mapping)      link file: l   (symbolic Link)      device file:          character device:c         block file:b      command Pipeline:p     Socket file: S    linux file timestamp      Access time      modification time      change time: time when the source data changed     ls     -a: Show All Files     -a: Do not display common path  . ..     -l: Long format     -d: Displays the directory itself information, usually used with-l     -R: Reverse Display     -r: Recursive display     -h: Easy-to-read format displays file size     -i:index node   Index nodes     tree   tree display directory file bash features four     alias  Displays all aliases     alias  aliases defined in the current Shell   =  ' originalStart command '     unalias  aliases    remove aliases      file View:     file FILE ...   View file content formats     cat  connect files to display          -E: Display Linux line terminator  $        -v: Show nonprinting characters         -E: Equivalent to  -vE         -n: The rows are numbered sequentially when displayed         -s: multiple contiguous blank lines are displayed as a blank line              tac  Display file contents in reverse order by line                  more    less     head        -n #   Display Lines          tail        -n #         -f Do not exit after displaying the contents of the file, continue to display subsequent additions          echo usage       -E: Support control character option,eg: \n  line break      \0nnn      \ 033 [# #m       The first # represents the foreground color, the second represents the background colors      \033 [0m  Control Terminator      eg: "\033[1mhello \033[0m"              -n: does not display the content wrap       file Operation     CP:         -r: Recursive creation of         -i: Interactive         -d: When the source file is a linked file, copy the link character itself rather than the source file to point to          -a: Equivalent to-dr        -p: Keep source file attributes          -f: Forced override, with-I time invalid              MV: Move files without using the-r option, copy directly

Linux Basic Four