Introduction to Linux in HPC/Linux Directory Structure

HPC.NRW
Other HPC Courses
1.	Gprof Tutorial
2.	OpenMP in Small Bites
Introduction to Linux in HPC
1.	Background and History
2.	The Command Line
3.	Directory structure
4.	Files
5.	Text display and search
6.	Users and permissions
7.	Processes
8.	The vim text editor
9.	Shell scripting
10.	Environment variables
11.	System configuration
12.	SSH Connections
13.	SSH: Graphics and File Transfer
14.	Various tips

Video

( Slides as pdf)

Quiz

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1. Which one is the top directory in Linux?

	/
	/home
	C:\

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2. The command cd without arguments : if you start in var/log/ and run cd with no arguments, what do you expect will happen?

	Nothing it stays in /var/log/
	It goes to your home directory
	It goes to the filesystem root
	The shell stops having a working directory
	It’s an error
	The shell prompt turns into a shark and eats you

Warning:

no undo and make sure what you want to do (page 48)

Exercises in Terminal (slide 49)

1. Go to a specific subfolder of a folder (example: cd Documents/courses/ ) and get back to the home directory using cd command. List 3 different ways to do it using one command. check after every action your path with pwd command.

ExpandAnswer:

      cd
      cd ~
      cd $HOME
       the last option $HOME is an enviornment variable. You will learn about enviornment variables later.

2. Go to the directory /tmp and jump between /tmp and your home directory back and forth. check after every action your path with pwd command.

ExpandAnswer:

       cd /tmp
       cd -
       cd - with cd - you change back to the previous working directory, pass the dash - character as an argument to the cd command.

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