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Managing files (Managing files (File commands (ls (list), cp (copy), mv…

- - - - any string
    - - any character in set
  - - - list
    - - copy
    - - move
    - - delete a file
    - - timestamps display
  - - - archive compressed
    - - copy-out
      - copy-in
      - copy-pass
    - - low level copying
  - - - give a file an identity
      - remove target
      - create directory hard link
      - Create a symbolic link
  - - - creates a directory
    - - deletes a directory
- - - - strings that define what can be done to a file
    - - SUID
        
        impersonating a user
      - SGID
        
        impersonating group
      - sticky bit
        
        prevents deletion by nonowner
  - - - can add, remove or set
        
        +
        
        =
        
        -
  - - - append only
      - compressed
      - immutable
      - data journaling
      - secure deletion
      - no tail-merging
      - no access time updates
- - - - includes permission
- - - - for kernel
      - filesystem
    - - must be changed
        
        usrquota, grpquota 1 1
- - - - filesystem standard
    - - file hierarchy standard
      - files can be shared
        
        NFS server
      - files can be static
    - - /
      - /boot
      - /bin
      - /sbin
      - /lib
      - /usr
      - /usr/local
      - /usr/X11R6
      - /opt
      - /home
      - /root
      - /root
      - /var
  - - - brute force find
        
        filename
        
        permission
        
        size
        
        group
        
        UID
    - - differs from find
        
        sophisticated search options
        
        database it maintains search
    - - searches with a restricted set of locations
    - - searches and lists full path
    - - tells how a command type will be interpreted
        
        as built-in
        
        external
        
        alias