Bash - ArtTHEbard/SYS255FA19-Notes GitHub Wiki

Bash

The Shell Bash

  • Born Again SHell
  • Analogous to the Windows CMD. It is a command line interpreter that is meant to implement the POSIX standard
  • Written in 1989 and has been updated since
  • Default shell for the most *nix operations systems, through there are others like
    • dash
  • The native interface into multiple types of server operating systems and network/security applications
  • Quite a lot can be completed with just bash
  • Being proficient in it is an important step for technical careers.

Convergence

  • Bash on Windows
  • Powershell on Linux
  • 65535 x 2 = total amount of ports
    • TCP and UDP (53 TCP is not 53 UDP)