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Further LINUX:

  • In the 80s, Microsoft DOS was the dominant OS for PCs
  • UNIX was much better but much more expensive. Minicomputer for commercial applications only
  • Both DOS, MAC, and UNIX were proprietary, i. .., the source code of their kernel is protected
  • No modification is possible without paying high license fee

After the line:

  • Inspired by the UNIX OS, the Linux kernel was developed as a clone of UNIX
  • GNU was launched in 1984 with the mission to develop a free UNIX like OS
  • KERNEL -> OS Basic
  • Linux: The kernel was passed on to many interested developers throughout the Internet
    • Today is the result of the efforts of Linus Torvalds and thousands of people in1991
    • Originally a kernel, it was combined with various software and compilers to create an OS from the GNU project called GNU / LINUX
    • Amazons is supported by names like Google, Sun, Novell, Oracle, etc.

LINUX File System:

  • * Nix (UNIX and LINUX) file system is a hierarchical directory structure
  • The structure resembles an inverted tree
  • A directory is a collection of files and other directories, the structure is recursive with many levels.
  • Unlike Windows, with multiple drives and multiple file system devices, the * nix system has only one file system.
  • LSB (Linux Standard Based) defines the Linux structure

You need help

  • Linux is a man equal to help (manual)
  • Man = k to find the command with that keyboard <कीबोर्ड> Use
  • Man to demonstrate aid for that order <कमांड> Use

Linux System:

  • Shell interprets user commands. It is responsible for finding commands and initiating their execution. Many different shells are available. Bash is popular.
  • The kernel manages hardware resources for the rest of the system.
  • User commands include executable programs and scripts.

LINUX File System Basics:

  • Linux files are stored in a single-routed, hierarchical file system.
  • Data files are stored in directories
  • Directories are deep as needed

Naming files:

  • Files are named
    • Naming each containing directory
    • Start at the root
    • This is known as pathname

Current direction:

  • A directory specified in the current working directory
  • If you omit the leading / then the pathname is relative to the current working directory
  • Use Public Works Department To know where you are

Some special filenames:

  1. / Root directory
  2. . current directory
  3. . . Root directory
  4. ~ My home directory
  5. for example: ./a Same as -> . ./jane/x -> Go up one level then loop in the directory zen for x.

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