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Last active November 17, 2021 15:40
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filePermission.md

File permission & ownership in Linux

File permission and ownership is very important in linux system.

Types of file/directory in Linux System

  1. (-) = regular file : text/js//html/css/any file
  2. (d) = directory : regular directory
  3. (l) = link file : ls -l /dev/stdin
  4. (b) = block devices : ls -l /dev/sda --> (CD/DVD/HDD/ISO/USB)
  5. (s) = socket : ls -l /sun/rpcbind.sock
  6. (p) = pipe file : ls -l /run/initctl
  7. (c) = character device : ls -l /dev/tty

Here, s - A socket file that is used to pass information between applications/process for communication purpose.
c - printer, sound card, virtual terminal, serial port, parallel port.
l - link file -->(softlink/symbolik link).

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